I don’t really understand what it is I would be wrong about. Is it about the word “shareholders” in the wiki instead of “owners”, what I called them?

Shareholders of a private company is often a small group of individuals or just one person, and they can also be called the owners. “Private” means the shares are not traded publicly.

A shareholder (in the United States often referred to as stockholder) of corporate stock refers to an individual or legal entity (such as another corporation, a body politic, a trust or partnership) that is registered by the corporation as the legal owner of shares of the share capital of a public or private corporation.

https://en.m.wikipedia.org/wiki/Shareholder