That's just so factually untrue it's hard to know what to tell you.
Do you understand how corporate boards work? How large shareholders get their own board seats? How boards hire and fire members of the management team?
The idea of a toothless board is a complete fiction. I don't know where you got the idea, but it couldn't be more wrong.
(Perhaps you're confusing it with boards where a single shareholder has more than 50% of shares, thus making the board largely irrelevant because the shareholder controls it. But even in that case, the CEO effectively reports to that shareholder, and there have been many, many, many cases of underperforming CEO's being fired. It happens all the time.)
Do you understand how corporate boards work? How large shareholders get their own board seats? How boards hire and fire members of the management team?
The idea of a toothless board is a complete fiction. I don't know where you got the idea, but it couldn't be more wrong.
(Perhaps you're confusing it with boards where a single shareholder has more than 50% of shares, thus making the board largely irrelevant because the shareholder controls it. But even in that case, the CEO effectively reports to that shareholder, and there have been many, many, many cases of underperforming CEO's being fired. It happens all the time.)