That sounds like it would be very useful, but doesn't really have a (monetary) "value" in the sense that most people use when talking about sharing the profits of the Data Economy.
It'd be much more interesting to see that sort of data sharing/access occurring than simply saying that people are entitled to some percentage of the profit that was "generated using their data" (which would be highly susceptible to creative accounting).
Preserving the privacy of individuals would still be challenging though.
