You have strong dedication towards taking things literally.

The issue is not that it's limited or unlimited, but rather about expected token usage across a user cohort. When you set a usage limit on something like Claude, or a gym, or a tutoring center, you need to do two things at once; set the limit high enough to attract the aspirations of your intended client base ("oh good this gym lets me go every day of the month if I want to"), but priced accurately enough so that you actually turn a profit on the average usage across most users (you ended up going 20 times the first month, but settled into 15 times a month after).

If there was suddenly a drug that you could take that would, while you slept, make your body walk to the gym and workout, so that you could max out that usage, the gym would be entitled to adjust either the pricing, the limit, or prohibit going to the gym while on the drug, given that they can't actually sustain all their members going every day.

As a correction, I've done some reading and when I said tragedy of the commons, what would fit better is a "congestion externality in a club good".