I suppose that's one reason. But Musk has formed basically pyramid schemes to keep his debtors from calling and to move his debt out from under him. Without that, he likely would have to sell shares to cover the debt of his Twitter purchase.

They could lose control through a substantial shareholder lawsuit. A minority shareholder suit against Musk could prove tremendous damages repaid in stock and the judge might not let the special classes of shares with extra voting power protect his control.

It would have to be a very good cause though, disliking him or ordinary bad business decisions won't cut it.