Many Unity devs rightfully feel threatened by this change, and want to abandon ship after a series of bad leadership decisions.
Lots of people say they'll switch to Godot, or are considering it. I strongly believe that foundational tech should be #FOSS, so I welcome this, but...
I also strongly believe that such decisions shouldn't be rushed, and taken out of spite and anger.
Unity's install fee will likely be withdrawn given the backlash, but the writing's on the wall and the trust is broken. Use the time you have available to consider options fairly.