During the initial kerfuffle, a Unity employee did quote one of their lawyers saying the following[1]:

> Our terms of service provide that Unity may add or change fees at any time. We are providing more than three months advance notice of the Unity Runtime Fee before it goes into effect. Consent is not required for additional fees to take effect, and the only version of our terms is the most current version; you simply cannot choose to comply with a prior version. Further, our terms are governed by California law, notwithstanding the country of the customer.

The communication around this rollout was absolute rubbish. Even employees were trying to get clarity, and they were forced to figure it out and real time.

[1]: https://forum.unity.com/threads/unity-plan-pricing-and-packa...