There are several such products being built in the 'crypto' space. Civic intends to allow you to benefit from selling PII for authorization. Datawallet somethin

There are several such products being built in the 'crypto' space. Civic intends to allow you to benefit from selling PII for authorization. Datawallet something similar. BAT intends to let you make money by looking at ads (or, to be paid for the data you hand over to advertisers). There are much more following this model of paying for data. Whether one or more will succeed, wether they need blockchains and cryptocurrencies: the future will tell.