Doesn't that effectively mean that these companies will become further entrenched and nearly impossible to dislodge from their market positions? A prime example

Doesn't that effectively mean that these companies will become further entrenched and nearly impossible to dislodge from their market positions? A prime example is Google Fibre, who tried to dislodge existing cable/internet companies, and failed primarily because of regulatory entrenchment. Why not allow the market to be more inclusive? This will help create exactly the competitive pressure that we all benefit from.