It gives more options to customize layout. Removing the second staircase also removes the need for a hallway all the way through the middle between staircases. Since bedrooms need windows, removing the staircase also opens up space to add 1-2 more bedrooms per floor. Part of the issue with the hallway and 2 stairs is you get a corner unit on each one and everything in between gets just one outside wall. Making a bigger building footprint doesn’t help a lot because the floor area increases more than the wall space(which you need to put windows so your apartment doesn’t feel like a dungeon. Which is why apartments tend to be long and narrow, or sometimes wrapped around a central courtyard.
I read somewhere about North American vs European apartments, particularly the smaller 2-4 floor/3-4 units per floor ones, and the European ones tended to have a smaller footprint, but more wall space and more practically usable space than the North American designs.
Exploitation is the key term here. Things like Co-ops and Crown corporations work to put capital back in the hands of the workers/customers/tax payers, but they can have a hard time competing with private industry. People like the idea of supporting local/sustainable/family owned/etc. but budgets are tight and Walmart or Loblaws fill your grocery cart for 10% less than the local Co-op. This all snowballs, the chains can pay less because they’ve got more positions to fill, they keep things cheap through economy of scale or negotiating power and keep that scale because they’re a bit cheaper then the socially responsible options. People work for the chains because there’s not enough jobs available at the local stores and they can only afford to shop at the chain because they’re being paid chain wages. If we could get enough people together we could enact a change, but that’s hard to do when so much of the population is one missed paycheque away from not being able to pay rent or groceries.
That kind of leaves regulatory or Crown-corps as the better solutions.