Nah, it's not a casino, it's a Ponzi scheme. It just needs progressively more money to be invested to keep prices going higher. (See 2020 when the economy went to shit, but lots of people had free cash and no where to spend it so bought stocks). For what it's worth, the real investors know this. That's why there's always political pressure to invest federal social security funds in the stock market.
Last person in is going to be the loser. You should jump in now, if not to protect my investments, you should think of all the pension funds. Do you want to be the one responsible for seniors having to return to work at Walmart?
Interestingly, it's a fractal Ponzi scheme. The whole market needs money, but individual stocks can be run-up by buyer's sentiment. GameStop will probably be forever the champion of that, but Tesla and great many others are candidates.
It's so cute when people suggest that there's a relationship between the stock price, the company and the economy. You have to laugh at AI attempts to build market predictions on economic data when there's, at best, a very passing relationship.