There's also the clear conflict of interest where Exec at company A is on the Board of Company B who's team of Execs are on the board at company A so it turns o

There's also the clear conflict of interest where Exec at company A is on the Board of Company B who's team of Execs are on the board at company A so it turns out to be really really easy to get them all to vote for more Exec compensation against shareholder interests. Because they aren't shareholders, they're insiders who also own shares.