Re:devils advocate. (Score 1)

its no worse than Microsoft having their any of their browser/search engine/storefront/whatever open by default on Windows

... and Microsoft got hit for this as an anti-competitive practice in multiple countries, losing all cases and agreeing to a consent decree, and paying massive fines (not that the fines would hurt MS financially)

The anti-competitive nature here is that providers that don't also own content are at a disadvantage.
That said, however, my tiny cell carrier gives me unlimited data anyway (the way things are going, someone else mentioned elsewhere in the comments), on some giant carrier's network (so I have good coverage)