... (Correct me if I'm wrong here, I don't live in the US.)
I think you are correct in theory. However we have a very corrupt system compared to say Europe. If market forces were at work in the market now we would have $10/month 100GB service. We would pay $5/month for cable and our cell service would be $20, like in most of the rest of the world. But in America decades of influence and money have created an idiosyncratic and expensive system that is the laughing stock of my friends abroad. The same thing can be seen in pharmaceuticals. We pay twice what the rest of the world pays.
And I'm supposed to believe what ISPs and Cable providers say? After literally 30+ years of bullshit, consolidation, and underhanded dealing? America, you are about to get fooled a second time. That is a shame on you not them. If we go along with it, we don't deserve freedom.