[api]

No, nor at 45, 55, or 65.

The biggest advantages early-twenty-somethings have over later age groups is a higher risk tolerance and a lack of obligations getting in the way of putting in unlimited time at the office.

The latter is a little dubious, since the data shows that productivity tends to fall after about 40 hours of work a week and to drop off a cliff after 50. Sometimes you gotta crunch, but if you're crunching all the time something is wrong. I consider that a sign of poor planning or "work hygiene."

The former does matter, but it can be overcome by compensating with better planning and by leveraging superior experience. You can compensate for lower risk tolerance by working to de-risk the venture as early as possible as much as you can.