People are resistant to change; that is something that’ll never change. * pun yay * 
All I can say is one of best things I have ever done of my life was taking the time investment to learn UE4.
Doing so has provided me the opportunity to visit another countries, work with very interesting people from everywhere, meet other cultures and etc… With Unity, not so much, it seems Unity’s freelance market is almost entirely internet based (you sit at home and just work online)