I think where people get heartburn on these things is when you introduce such a whiplash of a change with such short notice. I think even if Unity changed the pricing to 2 cents an install starting 2024, then upped it to 5 cents in 2025 and kept it at an incremental increase, it would have been a better “slow boil.” By going outright with the 20 cents per install for the entry level, the market reacted just as radically as the proposed changes.

It's not short notice, it's negative notice. They're potentially charging people who haven't used Unity in years, and had agreed to a completely different set of terms when they did use it. If they'd just made their charges apply to new versions of the engine going forward then people might still have stopped using Unity since it no longer made sense from a business perspective, but there wouldn't have been the outrage over it that we see now.

The problem is that Unity is trying to change their agreement with their past customers unilaterally to get more money. In that situation, one penny is too much.