Maybe I am wrong but I suspect it has been a smart marketing strategy

Unity guys could debug their engine "in peace" before entering the arena of windows game engines
MAC people never complained , having no other choice

Remember the days when Unity was still MAC only
In all forum it was given for granted that Unity was the best engine around
I wondered , at the time,how people could make such claim
I dont think there are so many developers having both a PC and a MAC


The preparation of the advent of the new Messiah should be studied in the business school