Come on then, where are all these examples? As someone who has sat on the MAA's UAS Safety Working Group, airspace infringements were not on the agenda! So come on, spill the beans and I'll raise it as an Agenda item.
Now if you're talking mini and micro UAS then there is scope for issues, as they're not flown by rated pilots.
However, for Remotely Piloted Air Systems (RPAS) they're flown by rated pilots (such as Predator, Reaper, Global Hawk) and I see less infringements from these types than manned types because of the SA they have in their Ground Control Stations.
So some examples for the debate would be useful.
LJ