I don't think that the incentive to "provide as little value as possible for as much money as possible" is in any way unique to the SAAS pricing model. Theoretically, every optimized pricing model will attempt to maximize revenue at a given value level.

And in practice, what does "get you hooked, take your data hostage" mean? I can't think of many SAAS subscriptions in my personal life where this is a real issue.