When we moved to SF a few months ago, Sonic wasn't available in our building so we had to get AT&T. I'm paying almost double what Sonic charges for basically the same service.
In both cases, where buildings had exclusivity agreements or had the fiber providers lay the fiber themselves, residents are worse off. Buildings should be running their own fiber and letting residents hook up to whoever they want.
Same thing with residential house internet; cities should own the last mile infrastructure (sure, pay providers to dig it and run it if you have to).
Especially since we're migrating off of copper and onto fiber; this is the chance to get it right for the next few decades!