I think it's as simple as "if no one is living in your home in a permanentmannee you get taxed hard". Landlord shouldn't be able to sit on a vacant apartment unless they can show that literally no one applied for a room. A billionaire shouldn't be able to treat a house like a stock.
But again, I don't know what any of this has to do with small startups suffering from the main topic. Paying some 4k more per employee isn't a singular gatekeeper, it's a deal breaker for those who already are on thr fence.
While they're all good ideas, I don't think they'll totally solve the issues of affordability here.