Perhaps the best way to try and answer this question is to list the reasons HD Radio might "Go Away".
1) The Licensing mechanism is unavailable or unreasonable.
2) Operating HD Radio becomes cost prohibitive.
3) The regulatory climate changes and HD Radio is no longer permitted.
Can or will any of these things occur?
As for #1, Many here have tried to convince us that Ibiquity is mere moments from folding up. You know,the allegations of not paying the rebates because they don't have the money. The financial inability to buy a new van. They're not being at a particular show where someone thought they should be. Let's carry this foolishness to the extreme. We'll assume that Ibiquity will cease operations on April 30th 2007. NOW WHAT HAPPENS?
Well basically nothing changes. If you have an HD-1 License you still do. If you multicast, you owe a yearly fee to whatever remains of Ibiquity, or whomever is awarded the assets. Barring that being awarded to Supercaster, PocketRadio, or Leonard Kahn, I would suggest the new owners would be able to have a receptionist and a bookkeeper in an office somewhere who could collect the $1.2 million a year for multicast fees. Heck, you can still "BUY" Lantastic and Artisoft dumped it years ago. Fact is, HD will be licensable for the forseeable future.
As for #2 - Is the cost of running an HD-2 Prohibitive? Answer - It depends. If you want 24/7 live DJ's and a few mix shows, you can easily get an airstaff of over 20. That's pretty expensive. However if you put up something network or load up the hard drive to counter program your competitor and knock him down that 2 tenths so your primary ranks a little higher - NO it's not very expensive. In fact many stations will just have existing staff do it. Net cost - ZERO. How long did most stations hang in there with their FM's? And some folks turned in the licenses. Think THAT will happen again?
As for #3 - There is some Skullduggery by the anti-HD group here. They would have you believe that the FCC has "Sort of" accepted Ibiquity's HD radio as a standard. There is the gleeful refrain that the FCC said "Well OK, we'll let the market decide." There's only one problem with that. As best I can tell,
THE FCC NEVER SAID IT.
Here's what they DID say...
http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-271699A1.pdf
Now I could be wrong, but I don't see that ANYWHERE in the document the FCC issued. I HAVE seen it here.
http://diymedia.net/archive/0407.htm#040407
But as you can see, this is a pro community radio site which isn't a big fan of commercial radio.
Back on point. Will the FCC change it's mind on the legality of HD radio? Well they COULD, but the events of March 22nd have been misrepresented by a few here. READ THE ORDER.
AM 24 hour operation AUTHORIZED.
FM Extended Mode AUTHORIZED.
Brokering Additional Streams - AUTHORIZED.
Perhaps the HD supporters have been a little too gracious in victory. I know I was pleased to see the reaction to the decision here. And the lack of gloating. But the point seems to have been lost. And the point is, HD radio won. BIG TIME.
If you didn't want HD radio then you lost. BADLY. There is no "Review Date". There is no "We'll see how it goes". There is no "Reconsideration". The final horn has sounded. The gun has been fired. The teams have left the field. The Victory parade has already happened and the city has swept up the confetti. GAME OVER.
That MIGHT be a little harsh, but that's the way it is.
So to answer the question "How much longer do you think HD Radio can go on ?"
I'd say as long as radio stations want it to go on. And THAT'S likely to be a good long time.
Clouseau