Because there is more freedom with a rich client's house than an office building and, more importantly, history always looks back favourably on those that stood out amongst the noise and paints those as "insert fashionable period name" norms.

I see you're still trying to get the internet to write your "thesis".

by the way, all those examples are 20th century, and to try to adventure an answer, I would look at the wealth generation post industrial revolution; as where before, everybody except the rulers (kings and such) was fairly poor, at this time, some people got really rich and decided they wanted what royalty had. Oh, and before that, architects would only work for kings, and there is the theory before "house" was "castle" which is just a bigger house. As for theory driven residential, not so much; for corb, mies, etc. was just a way to apply what they were already proposing in public buildings, flw is an exception since he really did have a theory in dwelling. get busy, read a lot.