Big risk rejected? As far as I see it (German, but not from Hamburg), the concepts weren't very convincing. E.g. the promise that it would only cost Hamburg 1.2 billion € and that the federal state would pay the remaining 6.8 billion. Which is nice, but they didn't actually manage to get the federal state to agree to that, much less to covering any extra-costs. Or unfinished plans for reuse of the built infrastructure. Add general mistrust against the IOC and you get a result like this, even after a massive pro-olympia advertising campaign.
