I think it depends on the individual girl. Some might want to get in and get out quickly, just to make some quick money. Others are going for more long-term success.
But we do live in America, so the ultimate measure of success in a lot of people's opinion will be money. I don't know the specifics, but I'm pretty sure a busy non-contract girl has more earning potential than most contract stars. Of course they'll have to do more scenes, but that doesn't seem to be a problem for the girls who genuinely enjoy performing.
Of course I'd prefer girls follow Gianna's path, so we get to see more of them. Then again, Jesse Jane did play a pivotal role in an episode of Entourage. That's pretty cool.


