It's been talked about from before we were awarded the olympics; that the Brisbane olympics were going to be used as a model for future Olympics to build sustainable infrastructure. The IOC, to their credit seem to be awake to this. At the end of the day 95% of countries have no use for a track and field sized stadium. For most other countries it will be a multi billion dollar spend to build it and even more spent post games to get it into a usable configuration (or do like Sydney has and keep a white elephant that had to pay teams to play at it).
$2.7 billion to increase capacity by 8,000 to 50,000 is a joke. In the future you're more likely to see the track and field being ~30-40k and the opening and closing ceremonies held in larger rectangular stadiums that have more chance of being used post olympics (or not even at a stadium like Paris).
If they want high quality new 80k+ stadiums for track and field again, they're gonna have to make some major changes.
40k is perfect for the one test match per year + the 1 out of every 5 year bandwagon support that the Lions get. A couple of lean years and they will be back to 16k a game.
This is the sort of stuff they're trying to cut out. Brazil's track and field stadium from 2016 Olympics should never happen again.
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