This has got to be a minor reason why adoption of AI isn’t faster.

Businesses like predictable costs and predictable performance.

If your new model is slightly better but crazy expensive, but doesn’t have to be with certain settings, but my user can accidentally run it that way by mistake or maybe your harness makes it the default by accident and the user doesn’t notice…

My beloved predictability is destroyed and trying to get users to understand this is useless.

Imagine a streaming subscription that worked like this: “We’ve updated our catalog with more movies. If you want the premium ones though you only get 2 per week and then you have to wait. But if you do mostly classics and a few from the 2010s you can squeeze in a recent theater release. If you time it right and do only one every day you can see 30 modern classics this month, but you can’t watch three today. Also your bill this month is $40 instead of $20 due to the library update”.

Yep, and now multiply that complexity by hundreds or thousands of employees. That's why companies are giving in to crude, hacky solutions like monthly billing caps. What else are you really gonna do?