I just don't get it. I don't see why I'd want it, over say, watching Seasons on DVD.
I think it's a horribly small market segment – roadies tend to use turbo trainers, only about 5% of cyclists own a road bike, and maybe 60% of the road bikes out there are either unused or old 10 speeds from back in the day, used for getting from A to B.
So you're looking at perhaps 1-2% of the cycling market who are serious roadies. I would guess that half of them use turbo trainers if you're lucky. So 0.5-1% of the cycling market.
You are then looking at how many people use a turbo trainer and will want to use your product. Some will already have the fancy video racing systems, some will just have the radio on, some will be happy watching the Corrie omnibus.
A new product is lucky to get 1% of the market. 1% of 0.5-1% is not a lot.
I may of course, be wrong, but I've just written a business plan for a cycling product, and read far too much market research – there are only a few assumptions in the above – how many of those who own road bikes are serious roadies, that people who own turbo trainers also own road bikes, and that half of roadies might have turbo trainers.
The commuting / casual leisure market is the big one.