Edit: not trying to be overly harsh on the bootcamps... I think they're pretty neat and a good idea on the whole. I also don't think they should escape the protections government regulation, done properly, can provide.
When government regulation is incompetent or malicious but has a positive reputation nevertheless, it can amplify harm.
I don't see anyone who wants to bail out people who bet on losing horses in the kentucky derby.
To reiterate, the Madoff scandal was a decades-long failure of government regulation. Regulation eventually prevailed, but only after thousands of investors were defrauded. The fact that Madoff was ostensibly regulated lowered the perceived risk of investment, thereby increasing the harm that was ultimately done.
Had the SEC not been in essence vouching for Madoff, many of his victims may have been more cautious and therefore avoided becoming his victims.
In case of bootcamps it hardly takes any time to understand if you are being duped or not getting money's worth. I honestly do not see much case for government regulation in this case.
Sure, most HNers could tell in a day that they're being duped. But most HNers don't need the boot camps in the first place to get a tech-sector job.
If government stays out of this it is likely that the bootcamps will end up giving "free one week course" etc. This is very common in India where non regulated coaching and training centers tend to give a free one day to one week course which the pupil may convert into a paid one.
As long as people have a choice between to attend or not to attend a bootcamp I dont see how government can step in.