Internet and mobile product development cycles are measured in months, not years. And the capital required to get a product built and into the market is less than $1 million. And the returns, when things work out, can be enormous.
The best talent in the venture industry doesn't work in large companies and won't work in large companies.
The venture business is a bit of an apprenticeship business, so the firm I worked for didn't let me make an investment until I was 30. That was probably a very smart thing.