There are plenty of monopolies, duopolies, etc in the "free" market that have nothing to do with governments. Example: How broadband companies share the map and don't intrude into each other's "territories".
What you're looking at is corruption, not capitalism.
Laying cables for internet/electricity is expensive, I cannot comprehend why the USA hasn't understood this particularity and hasn't attempted to create a publicly-owned national grid and fibre infrastructure where providers can plug into and offer internet connectivity and electricity production over it.
You do not want multiple competing companies laying down their own electricity cables, nor internet cables, it's wasteful and just creates a huge barrier for any competition to appear...