On the other hand, Starship Troopers is up to, what, 3 movies now? And there've been a number of other underperforming or straight bomb films that have received sequels. If there's a perceived demand someone could well do a direct-to-video sequel.
had a budget of $105 million. The second film had a budget of $7 million and the third cost $20 million; the lack of money spent on the sequels show, painfully.
Is Disney even in the business of direct-to-DVD live-action sequels? Especially in the face of the sinking home video market, I'd say chances of a cheap DTV sequel are a long shot in the most optimistic of universes.