I think moving away from first come first served would also help, and the London 2012 ticketing process did give this a reasonable shot (although it could be argued with limited success, IMO because they didn't allocate enough seats in this fashion). It would be more straightforward for concert tickets where there are only 1 or 2 price bands for a small number of shows.
Something that was very successful but is rarely mentioned was the ticket resale process. Most people I know who returned tickets this way got their money back and it appears to have done a good job of reducing the size of the secondary ticket market.
It's highly unlikely Apple tries to offset any guilt it may have over tax avoidance by hiring a few extra people. Ignoring a few inefficiencies, companies try to minimise (in cost and number) their workforce in order to maximise profits. If they can get away with their current tax structure then they're only losing money by hiring more staff.
Something that was very successful but is rarely mentioned was the ticket resale process. Most people I know who returned tickets this way got their money back and it appears to have done a good job of reducing the size of the secondary ticket market.