Reselling internet to apartments

I work for a small ISP located in a large city. Our speciality is normally rural wireless connections though. Im investigating a new possible idea. Were looking at getting layer 2 connections from our DC to apartment buildings in the city then reselling internet to the apartments. Layer 2 connections and such are cheap. So cheap we could beat out the monopoly provider by quite a bit.

Has anyone here ever tried this before?

Would it be easier to put a 48 port switches in the basement? Then run cables up to each apartment via the IDF? Or do apartment buildings normally have cabling I could reuse to get to each apartment?

Any big obstacles that would prohibit this? I have the permission of a few building managers to do this already. North American location.