This really reeks of the thick-walled Silicon Valley echo chamber. If "entrepreneur" to you means "founder of a hot VC-funded tech startup", then yeah, there's

This really reeks of the thick-walled Silicon Valley echo chamber. If "entrepreneur" to you means "founder of a hot VC-funded tech startup", then yeah, there's some evident ageism and it'll be tougher -- but not impossible -- in your 40s and beyond. But, if "entrepreneur" to you means "person who starts and runs businesses", well, there are plenty of those doing that up until the day they die. Heck, your 60s is a great time to start a new business: you will probably have more resources, more wisdom, better business acumen, and more free time than you did in your twenties or thirties. If at that age you decide you want to play in the SV startup scene, then cool, put some of your savings behind a couple of young hackers and do it that way if you must.