Saas offerings are safe as they don’t let you Buy a thing. They’re very transparently a service. Same with timed licenses. It’s clear what you’re paying for. Most of the time.
With games it’s often not the case. You buy them and then at unspecified moment you might lose a significant portion of functionality or the whole game. At the time you buy a game you don’t know if it’s for a time, what time, or what will stop working.