Elon Musk is another CEO in total control. Although Tesla is a public company and therefore has a board, it’s stacked with Elon’s allies/appointees and answers to him, not the other way around. Despite Elon not being a majority owner of Tesla stock.
And when he took over Twitter in 2022, he immediately dissolved the board and fired the executives who were on it.
When he took over twitter he owned 100% of the stock.