Yes, I can order DSL or wireless, get lower speeds, less reliability (IMHO, but that's subjective), pay a bit less for that, more for my TV service with the bundle gone, and come out with less for about the same price. Sign me up.
The whole package (TV + HSI) is what matters, not one or the other. The Tivo issue is relevant simply because it limits the TV choices to maintain that investment to one company, which affects the pricing for the combination of the two.
Is it a self-inflicted monopoly? Sure, in a sense. But Verizon's FIOS works with cable cards, so there are markets where that competition exists, and this isn't one.