Just read this post by Leonthefixer on the RacingTraders forum
The vast majority of people trying to trade could quite easily learn on Betdaq. They wouldn't be able to use BetTrader obviously but there are other aps out there. The bigger traders can't make the move due to the chicken and egg situation but what is stoping the small time traders and the new traders? Without the big traders there you might actually find it easier - is it that you only actually ever hear about Betfair and THINK that is the only place you can trade to make money. I can tell you it is possible to make £100+ a day on Betdaq.
Might be worth looking in to as I only want to make £50 to £100 a day