Multiple companies offering Fiber in many parts of the US.
There are also multiple options (Comcast, Wow, AT&T, Time Warner, bell atlantic, satellite, and many wireless options) in most areas of the US, which by definition means there isn't a monopoly.
Many people throw out the 'monopoly' label and really have no idea what the word means.
I have proof that much less fiber than was paid for was laid down. I've linked it before, here's a few different links if you can't be bothered to click on the previous one: