Blending GEO and MEO satellites delivers a hybrid of coverage, performance, and cost that is hard to beat. SES, Thales, HughesNet, and Thinkom are on the cusp of delivering a commercially-viable solution in this space.
O3b
Terabits in space: SES and O3b announce mPOWER constellation
The next generation of satellites promises a massive boost in total capacity available, including for service to airplanes. You just have to wait for it to show up. And hope it really works as promised.