Context about the Unity terms change controversy: https://www.gamedeveloper.com/business/unity-is-killing-its-...

> Initially, the Runtime Fee sought to charge developers a per install tariff once projects had passed certain milestones. It was a decision that left many users reeling, resulting in a colossal backlash (…)

How users reacted: https://old.reddit.com/r/OutOfTheLoop/comments/16h9lnw/whats...

> Any install, any reinstall, any installation on a second device, each and every one slap the dev with a fee. It gets dumber, because that cracked copy of your game on the high seas still incurs a fee when the pirate installs it. You might think we're at peak stupidity. You might think anyone who makes anything with Unity is a "fucking idiot" (the CEO certainly does), but we're not done yet. It's retroactive. (…)

Sounds similar to Apple's "Core Technology Fee", literally a mechanism for sabotaging third party app distribution in the EU.