I am not sure whether you read the article, but it explains that perception.

You have a peculiar assertion of price collusion. Unless you have clear evidence, that counts for little. The fact prices are relatively consistent could well suggest they are in tight competition.

If you believe the root cause of alleged monopoly/oligopoly pricing is tight control of the radio spectrum, then there needs to be an examination of that ownership and whether it was properly divvied out. Getting retard government officials to set prices is a fool's errand.