The Native Americans sold New York in a consensual deal - not that one theft begets another, even if they hadn't.
I mean, not that I personally have a problem with New York returning to Native ownership, but it's both (1) wrong to claim that it wasn't purchased in a consensual deal and (2) completely and totally irrelevant to the problem of digital piracy and entitlement to the work of others.
This kind of logic makes me believe that pirates can't be reasoned with - that theft is a core part of their moral framework - but only when it benefits them, of course. If they perceive that their employer isn't paying them what they're due, it suddenly becomes a huge problem.