Tampa....This is a market in it's infancy. Who knows what the baby is going to grow up to be? Could be SIDS or a huge success for all we know.
Anyway, the estimations I heard a number of times were in the ballpark of $25 per seat, in addition to revenues from licensing fees, Wavexpress, etc. It's a gamble for sure. However, in gambling when the odds are against you the payoff is usually well worth it if you hit. So, you either stay, raise, or fold, based upon you're feeling for your hand in the game.
Basically, I look at it this way...anyone who has products that are widely needed and/or wanted, and nobody else has those products, chances are you'll be successful.
And that's the enviable posistion I believe Wave is in.