My experience is, people like the theory of a rules lite game, but rarely actually like to them in reality. D&D 5E is a perfect example of this. The free rules, one of the starter boxes and an imagination, is plenty enough to play the game forever, and yet how many people actually do that? A few I am sure, but considering the continued good sales of 5E books, I would say not many. This is why 3E exploded in the way it did and why 5E will eventual be just as bloated, although at a much slower rate, both players and GM's like options, player love to pour over books looking for new and interesting character types and ideas to play, GM's like adventures they do not have to write themselves and even if they have their own home brewed world, they like setting materiel they can integrate into their own work. I am not saying there is no place for rules lite games, all I am saying is, book sales seem to indicate most (not all) RPG players don't mind a little bloat.