One of this big problems is that this change doesn't just apply to new Unity titles, but every single Unity title already released. This means that if a develop

One of this big problems is that this change doesn't just apply to new Unity titles, but every single Unity title already released. This means that if a developer released a Unity game a few years ago, they're still on the hook for these new fees, despite the fact they never agreed to it. These developers are now forced to pay these new fees (even if the fees eclipse the ongoing revenue for a game), or de-list the game entirely. This also completely erodes trust with Unity, as even developers willing to pay the new fees are scared that Unity will unexpectedly add more costs in the future.