Regulation is a key part of the cost of goods sold. Regulation makes markets.
For example, 5G antennas have been declared critical defense infrastructure, cable TV has not. That means that your cable company needs to follow local ordinances, get permits, rent existing pole space, etc. The 5G people can drop an antenna wherever they want with 30 days notice — on my block, a 5G millimeter wave pole was dropped three feet away from an existing telephone pole, in the middle of a sidewalk.
Wireless also operates under rules that allow it to do more revenue generation for things like prioritization, etc.
The comment you replying to talked about market competition bringing prices down. Not about regulation bringing prices down.