The whole bloody thing is an exercise in gold plating, but at an EU level, as demonstrated by the US not needing to go to 8.33Khz.
.. because the 28 (soon 27 ?
) sovereign member Nations of the EU are more 'sovereign' than the notionally sovereign 50 States (and some Territories) of the US. In the latter, the Federal Government (FCC, but coordinated with FAA) has insisted on administering the issue of all (not just Air-Ground VHF Band) frequency allocations including 'deconfliction'* at a central, Federal, level; whereas EU Governments have insisted on continuing to do it on a piecemeal, National, level. In UK, of course, we have the additional, possibly unique to UK, further complication of both OfCom and CAA being required by Treasury to charge fees (and make a profit) on users for the administration of our national schemes.
*AIUI, it is because of (some) EU member Governments' refusal to surrender to EASA/Eurocontrol the right to control traffic (FIRs still follow national boundaries; they do not follow State boundaries in US) and so allocate relevant Air-Ground frequencies that more such frequencies are needed to prevent mutual interference from traffic working adjacent ground stations. With central coordination as in US, those extra frequencies would not have been necessary.
So the 'gold-plating' is not by the EU itself, but on the insistence of at least some Governments of member Nations on their right to do their own things. Of course, some may applaud such a decision not to surrender such sovereignty, whatever the complications and expense which may arise.
(mere guide at) Jet Age Museum, Gloucestershire Airporthttp://www.jetagemuseum.org/
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