Some developers are seriously considering de-listing their games from online shops when the Unity Runtime Fee kicks off at the start of next year, meaning some titles built on Unity could end up being temporarily — or permanently — unavailable. Here's what developers are saying about the Unity Runtime Fee on social media, and what games could be impacted.
Plus unlike unity, being closed source, devs can actually contribute to the engine for others to benefit, as well as go in a fix problems they used to have to wait for unity to fix.
FOSS makes so much more sense when the people using the software, are devs themselves.
Not to mention that they eat their own dog food. The Godot application is itself running on Godot engine (which is also super useful for people wanting to add to it or make changes. eg. if you can make a UI for a game in Godot, then you can mod the actual Godot interface quite easily.)