Having an argument about it is one thing, but there will be other startups that help people defend against this kind of aggregation and they are no less justified. For example, it wouldn't be terribly difficult to poison the databases of aggregators with inconsistent garbage.

The data they sell is crap anyway and there will be laws against it if only on the basis of preventing the distribution of false information about people. It's too much work to keep this data clean and that's why they are going to get crushed for spreading lies about people.