As a shareholder group, most can not marshall the resources needed to do battle with management. In this case, Beebe can continue to dilute to raise money to defend his actions. The only effective way is to the gov't on your side. Their pockets are much deeper than management's.
Not only that, the wheels of justice take a long time to grind. Many extensions, stays etc. Most of the smart penny conmen quickly settle and move on to the next scam, however, some think they are invincible and will fight to the end. Those, like altomare, are fun to watch when they go down.