I think we basically created the developer group by adding regulations. Developers basically came about because they jump through regulations and funding and stuff otherwise it would mostly be construction workers.

Pre-1980 the amount of "developers" was much greater because you could just turn a single family home into 3 row homes.

Developers wouldn't really come from elsewhere to build 3 houses on the former property of one.

Who builds and what gets built is partially based on size.