Well, the reason why those one-it-wonder games barely accumulated many fans is because... they were one-hit-wonders. If these games had sequels then they would have more of a fanbase.
Sequels won't be be guaranteed to be success too just because the prequels were successful.
Examples : Vectorman 2, NiGHTS: Journey of Dreams, Golden Axe 3, ToeJam & Earl 3, and Crazy Taxi 3.
Not every game needs a sequel ... especially if they don't have a fresh idea to keep the game's interesting.