> Yes, I have [1]. Communal water, toilets and showers.

No, because that's non-prohibitive under current building code. Contrary to popular misconception, it's permissible to have communal facilities; it's just not economically viable, in part because it's extremely undesirable to live in.

Again, because of the other fixed costs of development. When those units come on the market there is ample demand. That doesn’t work if you have to price in years of community board and planning meetings.