If you build a company over 10 years and make zero profit, then sell it for $100M, you pay $15-20M in long-term capital gain taxes.
On the other hand, if you build a company and take $100M profits over 10 years, you pay $35M in corporate income taxes. And it's worse than it seems too, because you pay those taxes as you go, instead of waiting for growth to compound and paying taxes at the end of the cycle.
The VC industry exists basically because of the tax regime, as do a variety of other credit sources. This same tax regime also disadvantages boot-strapped companies, which is sort of a sad side effect if you ask me. If you have the capital to avoid profit-taking, you get richly rewarded for it.
I'd like to see tax reforms to avoid this set up, where small boot-strapped businesses can retain earnings in order to fund their growth, without paying corporate taxes, or having to resort to borrowing so they can spend down their "profits."