There are SD FS tuners availible if you look around but personally I would imagine companies concentrating on HD boxes more, as that is where the demand seems to be.
Yes it is true that there was a shortage of Humax HDR boxes after Christmas because they under estimated the demand for the units, Humax admited that. It also said on the Humax direct site under the HDR "Out of stock until 2009 due to high street demand". It took them a while after the Christmas break to catch up but they are availible now in shops and on the web. This in itself says something, that people know about FS and what it is at least, let alone want it for the boxes to have become in short supply.
To say that FS is not compitition to Sky because you pay for Sky and not FS is not only idiotic but I would be embarrassed to admit I thought that. FS is offering a service for no charge (after purchasing the equipment) that Sky are charging for that is not only compitition but the hardest sort of compitition to combat.
FV is also compitition because that offers FOC all that some people want in all the BBC,ITV,CH4 and CH5 channels, which at one time they would have had no option but to subscribe to Sky to get (Not including BBC1,BBC2,ITV1,CH4 & in some areas CH5). Also if you want some of the channels on Sky they are availible from TopUp on the FV platform for les money and whithout subscribing to a 12 month contract. Sky did have a finger in the FS pie which is why it kicked of with Sky Travel, Sky News and Sky Sports News. I am not sure if Sky still have a finger in the pie.
As for advertising there is advertising for FS, not only on ITV for the ITV HD channel. "Only availible on Freesat." but on the web and in publication too. Sky managed to acheive its subscription figures partly by having a strangle hold on sport but it has lost that now!! I personally know 3 Sky subscribers who are seriously thinking about going to FS.
As I have said before it is probably now harder to go out and buy a TV without an itergrated FV tuner then one with. In time the same will be said for TV's with intergrated FS tuners. Panasonic have already started it of, LG have anounced they are fetching out FS TV's and so long as they can get an FS license other manufactureres will do the same. When that time comes and FS has grown in content, (as it will do as Sky contracts run out) that is when Sky will start to feel the heat and things will start to change.
Instead of Sky subscribers coming on to the FS forum trying to put FS down they should be greatful that in time they will get for free what they are paying for now.