As ever so frequently these days, US regulations seem not to be able to keep up with modern times, and when they try to, they don't seem to get it right. I fly quite frequently between Europe and the US on Lufthansa, and I have yet to see any problems arise because of them providing wifi and gsm (Well, once I saw an attendant tell a man not to skype from the restroom, but I don't think of that as a problem
:) ). Your problem is not with airlines offering these services, but the people who are idiots - however, educating them by avoidance, i.e. by banning all of these services is just stupid.