"Survival of the fittest", you mean. There are plenty examples of big companies that failed (or would have failed wasn't it for government intervention).

You're right. By biggest i mean profitability, reveneue, etc. Which is, for a company, an indicator of their 'fitness'. I'm not talking about the loss making whales that had to get bailed out and for whom we are all now paying for..

No, you mean "growth of the fittest".

The big aren't successful because they are big, they are big because they are successful.

Of course, you could argue that the incremental value of an added employee is positive for successful companies.

But there's an opportunity cost, if employees in companies are not developing, taking risks, and focused like they would be if they were working for themselves.

There will always be big companies. The question is how quickly they are replaced as the biggest ones.