I'd argue that if the only value of something is that you can sell it later, that is a weird. At best, it's like a collectible card or something, and at worst, it's just a Ponzi scheme.
A collectible card doesn’t have paying customers; many publicly traded companies do. They are real businesses that make money. When they make more, the price goes up.
You seem to ignore that.
The economy is not based on the stocks, but on the value the underlying companies produce. E.g. Tesla makes cars, Google runs a search engine. Such companies impact the real world - Baseball cards collect dust.
It’s a broken comparison.