The diversified firm has long been celebrated as a bastion of corporate advantage. The logic seems hard to beat: Spread your bets across businesses and wield the flexibility of shifting capital and talent wherever returns are highest. Standalone firms, by comparison, appear vulnerable, with all their resources concentrated in a single bet. 

Not nearly always. A new paper Teresa Dickler, Timothy Folta and I published in the Academy of Management Review should give any diversified firm pause before entering a competitive market dominated by a non-diversified firm. Our study, which also appeared in the Harvard Business Review, shows that under intense competitive conditions, the very flexibility that appears advantageous may signal weakness to rivals. This can trigger a do-or-die aggressive response that dooms the diversified player. 

Our findings can help firms, venture capitalists, entrepreneurs and corporate strategists make the right decision about whether to enter markets – and when not to.

Commit or bust

One word encapsulates what standalone firms bring to the fray: commitment. A firm that cannot retreat will fight differently from one that can. Competitors, investors and other observers know this only too well. 

When Google launched Google Plus in 2011, it brought vastly superior resources and market reach to a fight with Facebook for social media domination. One thing it lacked was credibility. Every competitor, investor and industry observer knew that Google had other options: Search, Gmail, YouTube and Android. If Google Plus failed, the engineers would simply be channelled to another Google business. Facebook had no such exit. Mark Zuckerberg declared war and spent a year trying to crush Google's product. By 2014, Google had retreated.

Uber's retreat from China, Southeast Asia and Russia is another case in point. Local rivals, committed to defending home markets, outspent and outlasted the American giant. China’s DiDi, for one, spent RMB40 million to attract customers to its ride-hailing service. DiDi's co-founder said the company was prepared to bleed subsidies for years if Uber hadn't exited China. 

Uber eventually exited all three regions and redeployed its resources to India, the Middle East and Africa.

Where flexibility wins or stumbles

We found that corporate advantage derived from the ability to redeploy resources grows with competition until a certain point before it plunges. In markets with low competitive intensity and highly differentiated products such as machinery and industrial equipment, diversified firms extract modest benefits from their flexibility. They can move into growth areas slightly faster than focused rivals. 

The advantage grows dramatically in moderately competitive markets like fast-moving consumer goods. A diversified firm can invest aggressively into a new segment, establishing a position that deters rivals from matching its commitment. 

But in winner-takes-all markets, the relationship between competitiveness and redeployability flips. These industries, such as technology, tend to be characterised by high sunk costs and low product differentiation. Rivals fight to the death because there is no profitable middle ground for the loser – as Google Plus could attest. 

Other conditions that matter

We further investigated three other factors that determine whether diversification is a boon or bane to corporate advantage: uncertainty, resource costs and synergy.

Higher uncertainty makes flexibility more valuable across the board, though intense competition still erodes this. In markets with high sunk costs, the barriers to entry that might seem to hurt a new entrant actually help focused firms by making their commitment more credible. Conversely, if resources can be acquired efficiently externally, internal flexibility matters less – and the commitment disadvantage sets in sooner. 

Synergies, such as a brand or patent that can be deployed across multiple product lines simultaneously, work differently from redeployability because they don't imply a retreat option. Diversified firms combining both synergies and redeployability enjoy the strongest competitive position.

Microsoft's handling of its OpenAI relationship illustrates the practical application of this thinking. By establishing OpenAI as a legally separate entity, Microsoft created structural distance between OpenAI's engineers and the rest of its business. Those engineers cannot easily be redeployed to Azure or Office. 

Should you enter that business?

Our research points to two questions that companies or venture capitalists entering new businesses should ask themselves: 

1. Can you ramp up your resource/market position faster than competitors?
   In moderately competitive markets, the race to establish position matters more than the appearance of commitment. Get there first and your strong market position will naturally deter others from entering.
2. Can you credibly commit to defending your resource/market position, whatever it takes?

In highly competitive markets, this signal needs to be structural, like what Microsoft did with OpenAI. Announcing that you're committed is not the same as making it truly costly to leave.

Market characteristics should shape diversification decisions from the outset. Focused players tend to have an advantage in transportation, mining, oil and gas, and other industries where products are almost indistinguishable and upfront costs are high. Where differentiation exists, as in consumer goods or pharmaceuticals, diversified players have more room to operate.

Markets also change. Most begin with meaningful product differentiation before standardisation, imitation and converging customer preferences compress the competitive space. A diversified firm that dominated a nascent market can lose its edge as that market matures. That’s one reason why some activist investors push for companies to be broken up: the company really may be worth more as separate pieces.

The corporate strategist's job is knowing which conditions favour commitment and which favour optionality, and having the discipline to act on that judgement – even when it means walking away f