While I don't deny that internet radio can be competition for over-the-air, one must realize that some of the reasons satellite radio has never caught on is:
1.) The business model had them programming to the "minority" of over the air listeners (the "radio sucks" crowd). and...
2.) Paying the exorbitant prices for Howard, Oprah, NFL, NASCAR, etc, etc, etc. did not guarantee major audiences. (Nascar, for example, while undeniably popular in terms of butts-in-the-seats and on TV, rarely has proven to be a big audience getter on radio.)
Satellite radio can still succeed financially, but the business model needs to radically change. And the individual channels need to make money. (Yep...that means "commercials", and more programming to the masses, because this experiment proves, more or less, most people won't pay for entertainment, if a similar form of entertainment listeners are "satisfied" with is available free.)
So internet radio, remember: 250,000 individual radio stations, each with a listenership of 12 (I'm exaggerating, but stay with me here) does not lead to profit. You need the masses to win.