You are cherry picking the biggest winners and getting FOMO. Only around 5% to 10% of private equity backed firms go public, most just muddle by and some fail. The ones that do go public can be bought by anyone and some have done very well after the IPO and some not. SpaceX is a huge outlier/ experiment staying private so long and only having 4% float on its IPO. So far all the massive gains are on paper, almost no one has cashed out yet so it is too soon to tell how it really works out.
If you get an Interactive Brokers account they have low margin and commissions rates and pay very competitive rates on cash balances. You can do your own research and build your own portfolio and save all the fees which don't sound like much but add up over time.
I am not saying that it is not easier and better to be rich, but I don't see that the rich have a big advantage when it comes to investment opportunities if you are willing to do some work.
I think you've mistaken about risk, I never said the rich have lower risk, I said they have access to certain opportunities that the poors don't.
Let me give you an example, a real estate project opportunity came my way, minimum investment is $1m/lot. The person who broached me, is trying to get an LLC for about a hand full of investors. You think someone with a net worth of $200k will be offer this?
Another example, when the market had a dip due to the start of the tariffs, that was a great time to just buy SPY, people who already have assets can leverage a margin loan and only pay the interest while the loan is open, well that is an opportunity. Sure enough market bounced right back few months later.
To your example of private equity, why are you thinking that the only exit strategy is IPO? That's just silly.
Of course all of these carry risks, and greater risk that just a long term S&P500. My point is this is only available to rich people.
Now if you take exception to fees, that's fine, one can do a lot of it themselves to save on the fees. But to say that rich people don't have access to opportunities and financial engineering that the poor don't have access to, that's just unreal.