Maybe, just maybe, the low value many people place on their personal data in a commercial context is actually correct, and Google, Facebook, et al have been paying way over the odds for it, but have so far managed to profit by convincing _their_ customers that this data has a much higher value.
The main risk to the individual is the mis-application of this collected data by other organisations, e.g. through the data leaking or it being appropriated, and this is one area where legal requirements (and penalties) could be strengthened.