They have a popular 3d editor, they should fire the zombies in their company, pay better their good engineers, get rid of middle managers and give bonuses for fixing their crappy code, until its quality is somewhere near unreal and they can get AAA games.
If they copied a page from bevy engine and turn their engine into a (real) ECS based experience (and fix GC hangs), they might be able to wrestle some devs from unreal.
There is actually a lot of money to be made with the various suggestions I made. Ignoring that leaves a lot of potential revenue on the table.