Thank you all for your responses.
...as you make it "Web 2.0" and get Venture Capitalists to fund you!
Web 2.0 smells like an answer in search of a problem. The engineers have this neat technology, but they have no idea of why people want it nor how to make money. Didn't we learn that lesson in Web 1.0?
I believe the standard way of determining this in the business world is to hire a ton of marketing people to find out how big the market is only to have them determine they don't know.
Yeah, Gardner reports work this way. They're vastly overpriced for the 4 page summary of what you pay for. The data only says what has happened, and doesn't predict market growth. Still, any numbers are better than no numbers at this point, but the mainstream marketing research companies don't address markets this small.
Obviously there is a market (a crowded one IMO) because Costco and Frys are selling cabinets and there are quite a few other vendors selling cabinets, control panels, and kits.
Quasimoto Interactive (from what I can tell) seems to be making the biggest push to expand their products to the mainstream market, such as Best Buy, Sams Club, etc. They're not a public company, however, so their data isn't readily available.
Yeah, the market is crowded because anyone can make a cabinet. The business term they use in our class is 'low barrier to entry'.
Maybe the people down at Gameroom Magazine have an idea. I would think it's their business to know.
http://www.gameroommagazine.com
Yeah, I thought of that. I'll try asking them, but I wanted to make sure that I wasn't overlooking something obvious.
Thanks for all your help!