Those companies can only do those things because the shareholders allow it, if the shareholders didn't allow such thing, they could vote out the board that allows new stock to be issued or stock options, and put someone else in.

When a company is public the shareholders are the ones that decide things.

The stock options though are normally given CEOs that increase the stock's price by a lot.

Only two issues that I got are : When stock buybacks are done via loans. Getting loans to do stock buybacks should not be permitted. And with the fact that big ETFs don't allow the people that own those ETFs, and thus own the underlying individual stocks, to vote during shareholder's meetings, and instead they vote for them, like Blackrock does with their ETFs.