Maybe you should try understanding the fundamentals of markets before writing articles about economics.

Buying stocks from any random person does help the underlying company, since it essentially increase “demand” for said stock.

The more people want (to buy) a stock, the more the price goes up. Thus, when the company sells the stock it holds in order to raise capital, it will make more money.

That’s the “basic” explanation anyway, in reality, whenever you buy a stock, depending on the circumstances, you are doing a few other things to help the underlying companies.