It started with Oanda. "Trade any size you want!" they say. It was true. You can trade 1 unit if you want. (1/100,000th of a standard lot) Then along comes GFT. Flexi lots of 1 to 20,000,000 units. The question is: Why don't pro firms like IB also introduce flexi lots and swallow then entire retail spot FX market, essentially shutting down firms like Oanda, Refco etc. Is it not feasible? Just a question by the way, not a request. I have an account with both IB and Oanda.