Wait, is Unity allowed to just change its fee structure like that?

wave_walnut@kbin.social to Gaming@kbin.social – 0 points –
arstechnica.com

Confusing, contradictory terms of service clauses leave potential opening for lawsuits.

2

Yes, but if you don't upgrade, you can keep using the old license. Unity tried to delete this from the Internet.

According to the article, it's not that simple. This is from the ToS for the Unity Editor, which is subservient to a broader Unity ToS that has much stricter legal language about changing anything without warning and the customer being able to go fuck themselves.

So, yes, technically this bullshit may be completely legal. Devs who were sold Unity on "no royalties" may be forced to pay royalties. Which is definitely healthy for our society and not obviously a problem.