After a read through the company's prospectus, the initial answer to both question seems to be, Yes.

Most of the time, when people ask broad questions about difficult issues, they're not so much looking for answers as for authority, for a safety net to fall back on.

The answer, according to PwC, is Semantic Web techniques. PwC believes that the Semantic Web offers a practical way to address the problem of large-scale data integration.