You're one of many minor shareholders. They give you in theory some say in the company, with one vote per share, but in practice you're ignored. Then you have the major shareholders, owning millions in shares, and having some to big influence in the company. These are the people they invite to shareholder meetings. And then there is the special class of shareholders, think of Musk and Zuckerberg, that own now billions in shares that give them 10 votes per share for example so nobody can outvote them.