By this logic we should be using tax payers money to compensate people who suffered losses in ICOs. And we should also use tax payers money to pay the bonuses of the ICO leading CEOs afterwards. How can this be: https://www.wsj.com/articles/in-a-blast-from-a-financial-cri...
Fraud still happens even in this space, but it's not a huge moonshot like an ICO would be in the best of circumstances (let alone the completely fraudulent make-money-fast type ICO scams.)
My thought on the CDO crisis and the somewhat nonchalant reaction from regulators, is that this was a sign that Wall Street needed more regulation in certain areas, their howls of protest on regulations that did appear post-2008 (eg Dodd-Frank) notwithstanding. It is worth noting that in the Savings and Loans scandal 20ish years earlier, people were jailed for selling fraudulent investment vehicles. The reaction to the CDO driven crisis in contrast was very weak IMHO.