[bohrsatom]

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.