It's only for people travelling between Paris, Brussels, Amsterdam and Cologne but if its feasible it could always be a way to tempt commuters into first class.
GNER have been doing this on the East Coast Main line for years, no idea what their speeds are like as I stopped using them just before they installed it all.
God, i think the world is going a bit loopy now i mean internet on the train systems.This would only be good if you desperately needed to use the computer on the train for like a businessman etc.Still it might succeed.