I've been building startups for 15 years, volunteered at two accelerators, angel invested and networked a lot. Anecdotally, the majority of the founders that I have gotten to know and lasted more than a year (actually building product and selling it) are middle class, comfortable being frugal, and don't act privileged at all. The few that I know for a fact come from exceptional money do act privileged, kind of egocentric and wasted a lot of money on things that were performative.
I don't doubt lots of people from money go into entrepreneurship, and I'm sure some of them are successful, but from my experience privilege in this way often seems like a disadvantage. The vast majority of success I've seen comes from middle class.
It's anecdotal, but it's in the dozens.
It's very possible to bootstrap a successful business with very little resources. What matters is that you can empathize with people well and at scale and then solve problems pragmatically. Test your hypothesis constantly and don't be afraid of being wrong. Success doesn't come from money spent on good ideas, it comes from understanding other people's actual wants and then focusing on serving what is important and unsatisfied and creating practical economic feedback loops. It involves schlepping, hard work, sacrifice and resourcefulness. Timing matters a lot for startups (technology has developed enough to actually satisfy customers). Seed capital is optional if the founders learn how to build the company themselves. The vast majority of seed capital is wasted, and people from money waste more.