The dentist can weather the poor investment. Knowledge does not make you financially solvent. It just improves your gambling odds as it relates to equity investment.
Super off topic, but the wealth gap is exacerbated by not taxing the wealthiest at a high enough rate, not regulations against capital market participation in highly speculative ventures. To argue that accredited investor regulations are the problem is no different than arguing for lottery tickets or penny stocks as an investment strategy for low income citizens.
Lotteries are super regulated though, it's (no matter the country) an utter nightmare, even stuff like a school's trinket raffle. The reason is a shitload of people making "easy profits" by frauding people.
The wealth gap isn't going to shrink by making it easy for startups (or "startups") that can't convince rich strangers (or friends and family, or crowdfunding platforms) they're worth investing in to convince larger numbers of less rich strangers to do it instead.
Most companies funded by professionals go bust and the risk adjusted returns to VC as an asset class aren't that great: the funds that have spectacular returns being balanced out by those that lose their LPs money. And few unicorns are going to be spending their effort pitching average earners for $2k cheques. Why would we expect the average joe to invest better than the pros with less capital to diversify, no board seats and substantially worse dealflow?
You're not going to find a welcoming crowd here criticizing startups on Y-Combinator news, a site written by Paul Graham and a site catering to a startup accelator's usual audience.