but with sat you cover 99% of the population, with ip you drop coverage to 60%? the more tvs people may have the more bandwidth they need
Not for the same cost. and I bet it would be closer to 80% not 60%. No satellites to develop, launch, maintain, etc etc. No equipment to develop install, maintain. There are other costs of course but At&t already has most of them anyway. I bet the cost per customer is astonishingly less than with satellite.
As for caps, that all depends. At&t could offer no caps just as they are doing now for Directv customers who also have At&t cell service. I will say however if it becomes the main source of getting TV I don't know how the pricing would be.
I think we have to forget about the goal being to be able reach everyone because it isn't the goal of Cell Service. If it was it would be done by now.
And another thing, what about the thousands and thousands of potential customers in cities and populated areas who don't want a dish on the roof, or can't or can't easily do it but do have access to data.