Prices have been going down lately due to intense competition. Sprint and T-Mobile are aggressively competing on price, and V and T are cutting prices to keep from losing too many customers. Meanwhile, Sprint and T-Mobile are steadily building out their networks to compete with V and T coverage advantage, but they have a long way to go.
And Dish Network has bought a huge amount of spectrum at auction. They will be entering the business in a major way sometime in the next few years.
They're not acting the way you describe. Not anymore.