The actual pattern is often to give away great wealth.
Do you think that all companies and industries should be small? I think Mao tried that and killed many million people.
Founders have stock, and if their company gets big, that stock is theoretically worth a lot. Successful companies make stuff and create productive jobs. Big enterprises created most of the stuff we now enjoy.
A successful private enterprise usually enriches the general population, it doesn't deprive it. Jealousy is not a basis for sound economics.