Because things like the financial crisis of 2008 happened? Because as far as I know the SEC hasn't introduced any sort of uniform fiduciary standard for financial advisors? While I don't know the inner workings of the street, everything I see seems to point to the SEC not doing enough to penalized well-established players, and is allowing a culture in which firms do their best to not get cauhgt/apologize for transgressions rather than follow the law. Maybe it's just that my news sources are biased, but I try and vary them and pick generally considered good publications (when it's written form at least).
It seems objectively difficult to find anyone that's going to say the SEC is doing a great job at reining in the financial sector -- so my question stands, why are they doing such a good job at reining in ICOs, using tech that's barely understood by the general populace (though it's probably easy to spot how scummy they are), and in an absolutely new regulatory landscape?