This is of course not including the yearly Unity subscription, where Unity Pro costs $2,040 per seat (although they may have Enterprise pricing)
Absolutely ridiculous. Many Unity devs are saying they're switching engines on social media.
This happened to a crafting/cutting machine and its software a while back.
The company wanted to start charging once you hit a miniscule upload threshold, forcing you to pay if you wanted to upload more than, say, 20 images per day.
Folks who already owned the machine were furious that they'd essentially be limited out of their own machine, when there was previously no extra charges for use.
The company rolled back their statement and stated that they'd only start charging people who purchased & registered their machines after a certain date. Older users would not be charged.
Even so, after the shit they pulled, people no longer recommend that specific machine/brand/company anymore because of their nonsense.