But
let's assume GA fees for ATC services. Very likely many GA pilots,
including myself, will reduce or eliminate the use of those services.

When that happens, the now privatized ATC will probably petition the FAA
for rules mandating ATC contact. They already mandate "weather" briefings.

In addition, since the local ATC cannot ask me to change directions
commercial aircraft will have to change directions to avoid me at an
unverified altitude.

This will be used as a reason to require positive control. Likely the
floor of the A could be brought down to Great Britan levels.

Jose
--
The monkey turns the crank and thinks he's making the music.
for Email, make the obvious change in the address.