Bit like the "E" airspace over a certain regional airport that is served by both Virgin and Jetstar, yet no radar to keep the big shiny fast jets with fare paying pax on board away Jo Bloggs in his ultralight.
Funny how that got changed after a B737 and a Tobago went nose to nose! Even more fun when a certain large law firm placed an ad in the local paper asking for people off the flight to come forward so they could start a class action against the goverment agencies involved.