So here's what Unity says the new pricing policy is, today (assuming it doesn't change again next week, like it did last week, and the week before).
https://blog.unity.com/news/open-letter-on-runtime-fee
Critical thoughts:
1. The fact that the new fees *only apply to future versions* is the critical change here, and probably(?) avoids a lawsuit. This *will* have interesting ecosystem effects since many people will now want to stick on 2022.3 LTS indefinitely. Possibly, libraries will latch to 2022.3 and never update.