Why do apartment buildings cap at 90 when FC Houses can support up to 512?

Honest to god just curious. Apartments are already nearing their bursting point again for capacity (at least on my server, I can't speak for anyone else but the words I hear here and there suggest similar). If Housing is going to be focused on FC support, why not make apartment buildings have the same capacity?

Not having a house sucks, but I feel bad for anyone new to the game that can't get anything. FF14's single player experience is good enough that they may want to keep to themselves and they shouldn't completely be SoL for that choice.

And before anyone asks, yes I'm in an FC, and I love it to bits. This is legitimately just something that crossed my mind and struck me as strange.