(Raises Hand).Well, that's sort of good news, since at least IB will probably be left untouched. Their feed is not real time, but might be enough for many algos. I'm not really planning to do HFT nor anything similar.
Is there anyone here day trading succesfully using only IB Market Data?
I was going to buy a data feed, and looked at a few vendors, but was stopped cold by these non-display fees. Let's not forget that there's more fees from the vendor for the data, including setup and monthly fees. It's just too expensive.
IB's data feed is usable, but I had to slow down. With a slightly delayed VWAP feed, It is impossible to compete against someone using real-time tick data. I was pushed into day/swing trading, limited by the quality of the data. Also note that you will not be top of book; others will get orders matched before you. You get what you pay for.