If thing still making money and not badly broken yet then they stick with it
game dev are not robot to learn coding for new thing and get it right away
it would take years depend on the person and not to mention funding and other stuff
there stuff like dev trying out new game with new engine and failed badly and almost bankrupt stuff out there
I sure dev dont wanna risking money and rep just to try them new thing that they not good at yet
nevertheless, many people get use wtih rpgmaker mechanics and what they been doing now and changing now
might be late unless they update ,polish new engine and the old one
and that would be a considerably large nudge
too large
they would not want to do that for sure
SO i gonna enjoy what i have here
hopefully...