Most people in the US may not care, but that's because they simply do not understand how it will (or already is) affect them.

The average person thinks that, at worst, they'll just see ads that are more intelligent or targeted. Who cares, right?

The do NOT realize that these troves of data are going to be used to someday deny them health insurance, get them fired or not hired for some job, get screwed in job pay and benefit negotiations (due to companys like Experian selling you pay history to employers), be charged more than other consumers for the same product (due to being able to pay more), getting denied for loans or charged higher interest rates, not accepted to a school, refused entry in establishments because you're not a 'good' customer, etc.

And that is just what big business will do.

Wait 'till big governments around the world see just how much power the Chinese are able to exert over their populace playing the same data games.