A better analysis would be to compare SIRI to it's counterparts in the cable subscription business. Take into account the cable companies and satellite tv companies have many competitors in the same business this is just a few of them. So think what SIRI should be priced at over the next few years being the only sattelite radio company now and for the forseable future
Comcast corp 40 Billion market cap
Direct TV 23 B
Dish Network 5 Bil
at the very minimul SIRI should be a combined market cap of all 3 companies 68 BIl. Were looking at acompany that is destined to be an over 100Billion dollar company one day