To be fair, if FIFA wanted to maximize profits, they should auction tickets off instead of allowing scalpers to eat the delta between sales price and real value.

To be fair, GP said that FIFA is corrupt, not that FIFA is either profit-maximizing nor out to light the goose that lays the golden egg on fire.

I know it's hard to imagine in the US, what with our quarterly-profit-maximizing corruption, but it is possible to be corrupt and still have to balance long-term concerns like "keep the graft flowing".

To be fair, most of the scalpers are FIFA.

The trick to getting away with being corrupt is to as corrupt as you can without your marks/customers/voters/whatever revolting¹. Switching ticket sales to an auction format would likely add enough friction that many people² wouldn't bother, bringing the price back down, or would make a very public noise about how unfair it feels.

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[1] or authorities taking action, but that usually comes after the marks/customers/voters/whatever speaking up loud enough, unless by “taking action” you mean “taking a piece of the action” by way of being corruptible themselves.

[2] from those who do, or might in future, play along with the current race-to-buy-at-fixed-teered-rates system.