Subscriptions are a toxic business model.
I personally don't use any "traditional" cloud services like AWS, GCP, because of the uncertainty of costs of anything going haywire while I'm at work or on vacation.
And many companies come here when they get a surprise bill after a buggy push. Not having a spend limit is more often than not a complaint. Notice I wrote "offer" not "switch to". They don't have to be mutually exclusive and big corporations could still get limitless spending if they want.
I prefer when making mistakes is difficult.
Subscription pricing certainly made Adobe products far more accessible when I was younger.
Now that I’m older I do wish I could pay a one off payment.
On the other hand I think for a lot of cases the real business case is "user will forget that their bank account is being bled dry by 20 subscriptions they forgot about."
Another one is that I've seen in the long term, together with bundling, they lead to industries that set new revenue records year after year despite being senescent. Cable TV is a particular case: subscribers had no ability to "walk with their feet" when MTV gave up showing music videos. I can't unsubscribe to CNN or Fox News or both of them and still keep my subscription to less pernicious channels. I'm afraid that Microsoft's GAME PASS is going to follow the same trajectory and make the scene for XBOX ONE games even worse than it already is. (Shoulda bought a PS4 is what I know in retrospect.)
I use "legitimate" there because a lot of SaaS is only offered as a service to soak customers, with no technical need or benefit to being sold as a service. That's the toxic business model.