I also find it hard to believe 5% of customers are doing that, though.
For example, I don’t mind that Netflix pauses playback after playing continuously for a few episodes of a show, because the options they present me with acknowledge different use cases. The options are: stop playing, play now and ask me again later, and play now and don’t ask me again. These options are kind to the user because they don’t disable the power user option.
I also wouldn't consider my usage extreme. I never use more than one instance, don't run overnight, etc.
As I said, I have trouble believing this constitutes 5% of users, but it constitutes something and yeah, I feel Anthropic is justified in putting a cap on that.