Because it's a really bad idea, and company towns are specifically something we've tried and found (as a society) to end badly, every time? More usefully--cons

Because it's a really bad idea, and company towns are specifically something we've tried and found (as a society) to end badly, every time? More usefully--consider the extra deal of personal bullshit that the company now has to take on. Think about the sorts of things that happen: Does HR deal with two people, one who can't get to work because the other is having really loud sex into the wee hours of the morning? If you have kids, and they fall over while horsing around, is the company liable? Is the company harassment policy violated if somebody leaves the window open while having kinky sex? How do renter's rights get invoked in the event of being fired? It's just all a big headache.