This is a prime example why its not always easy trading stocks. Sure sometimes you get lucky. However if you buy a bluechip stock like McDonalds or CocaCola how much profit are you going to earn per year, maybe 5-10%. Sure better than a savings account however unless you are a millionaire, never going to get rich that way. You can try and trade options, however know that they all got huge premiums and most expire useless.
I always avoid IPOs for that reason. The only exception is quickly flipping to greater fools during the launch hype, knowing it's likely to come back down near the IPO price.
I would say there is some middle ground between buying into IPO craze and investing in blue chips. In fact, I'd avoid picking stocks at all and focus on sector wide trades.
One of my favorite equity listings is BLOK, an ETF that heavily invests in crypto platforms, related funds and auxiliary services, and also has some BTC exposure, along with some general tech industry exposure. I see crypto and tech stocks riding the same overall wave, reinforcing each other's bull markets, and unlike trying to pick blue chips, I would expect BLOK to consistently outperform the S&P500 and other benchmarks, at least given the current monetary policy context.
https://www.barrons.com/quote/fund/us/arcx/blok
So, IPO's are bought by big banks way before they are officially starting, and they buy from lower end of the price, all those who buy at 200 are not banks, usually just regular investors like us. Plus buying blue chip to make %10 a year is not that bad, if you do that for 30-40 years, you retire a rich person, not a bad idea, just doesn't make you rich overnight that's all.