I can't find the direct link, but I remember seeing an article that said the following happens after every Olympics:
1. There is some level of scandal over ticketing
2. The IOC forms a technical committee to look into it
3. The technical committee says that the Olympics is a relatively unique ticketing situation (all the different buckets of tickets, how they change, when they're released, etc.), and that the best solution would be to invest ~$200M in a custom ticketing solution which the IOC would own, and could then lease to the organizing committees and other international event
4. The IOC executive says that it's a sports organization - and not a logistics company - and reminds itself that sales are the responsibility of the host Committee, so they should deal with it and figure it out, and then kills the idea.