You don't have to mandate anything of landlords. Public housing is a thing.
There are very successful examples.
And on the car side, there's plenty of very cheap new options. I can literally lease a new EV for ~$100/month. Who's voluntarily building starter homes anymore? We built fleets of those in the 50s, without the song and dance that they were luxury and required time to turn into starter homes. If anything in a lot of places, the starter homes of the 50s are the relatively expensive housing of today.
There are very successful examples.
And on the car side, there's plenty of very cheap new options. I can literally lease a new EV for ~$100/month. Who's voluntarily building starter homes anymore? We built fleets of those in the 50s, without the song and dance that they were luxury and required time to turn into starter homes. If anything in a lot of places, the starter homes of the 50s are the relatively expensive housing of today.