You are a little deluded to believe that everything will be HD in two years. Even if the FCC held to their mandate for HD, it would only apply to free OTA services, not to subscriber services, that's why Howard Stern Isn't concerned with the FCC anymore, and why decency rules are different for The OTA broadcasters and Cable/DBS Channels.
It could be that at some point more private channels will opt to go HD, but only when it is economically advantageous. Since most of the Top 46/60/120 channels air 95% rerun each month it would take years to process out their existing inventory, even if the started producing HD today, it would be years before it would be feasible to cut over to the HD format. And since Alton Brown, Sander Van Oker, and Jane Pauley are still producing 4/3 SD programs. It will be decades before those channels make the HD leap.
When the Premium Channels start converting (not just giving a token nod) to HD, then I'll side with you that there is a change a comin'. But until then it is SD for the masses. Not even MTV is adjusting to HD, And most of their content providers would probably be glad to showcase themselves in HD. So maybe when MTVHD gets underway, that would be a sign of the change.
But for now, HD will continue to be less common than an HBO subscription. But that doesn't mean it can't be profitable.
Will Voom expand it's offering? Absolutely, maybe even the Gene Scott Channel (for those that are familiar with C-Band). But will expanding the offering and expanding the cost (to Bandwidth, programming, Technicians, Support, Etc) bring on a lot of new subs? no. Could they get milage out of not three SD Indian Channels but 1 new indian channel in HD? yeah!! Would you want to see Ashwariya Rai, and some of the Bollywood content in glorious HD? you think she's beautiful in SD. . . And could Bollywood internally master HD content ready for Voom, yeah. So what if a bollywood producer, did the remasters, offered 12 months of Indian classic content to Voom, all they need is transponder space. Win Win Win.
Will Voom be able to replace another service entirely for everyone? no, will it satisfy my basic SD needs while giving me something extra? Yes. For those that want an E* offering AND HD could they get a mix to satisfy them? YES.
There is a poll on this site that seems to show that many people suppliment Voom or use Voom to suppliment something else. If Voom Stays independently distributed, or becomes piggy backed onto other service providers equipment is really not important. Do you care if the receiver has the rainbow voom logo on it?
It will never be a perfect world there will always be overlap, but I can tell you, I'll be happier that there is less overlap if I choose two services.
What we all need to do is go out and encourage our neighbors to try Voom.
IT'S a BUCK!!!! and 6 months of movies they probably haven't seen, can't say that about their starz subscription. If it all goes away, then it is less than 6 months of new movies and they can be back up with their same-ol' in less than a day.
Even those that are voom haters, encourage your neighbors, prove that voom can't work even with your help, instead of it proving successful in spite of your efforts.
Vooms success will be good for every subscriber of every service. D* will actually ramp up it's HD format if they see Subs willing to change for HD. E* might even begin to talk about offering HD, so that would be something more that you whiny asses can complain about.
SEE, there is something good for everyone in VOOMS Success, the whiners will have more to whine about and the winners will have more to enjoy.