What size dish goes with my Nokia?
I'll be closer to believing this is a viable game when a handset manufacturer starts showing interest. ESA have their own agenda to promote.
In the real world, why would a handheld DVB receiver need a substantially smaller aerial (dish?) than a fixed (domestic) one? The Yanks are trying digital audio via satellite (but it's struggling commercially) as the article mentions. That service needs truck (or car) mount size aerials. Half decent video, even for a phone-sized screen with low refresh rates, needs more bandwidth than audio, so probably needs a bigger aerial. To improve received signal quality you could have higher power transmitters on the satellites, or same power over a smaller footprint, but both of those are economically unattractive, and anyway ye canna change the laws of physics.
If people want transportable DVB-S systems you can get it today for less than the unsubsidised cost of a mobile handset, but the DVB-S doesn't fit in your pocket.