3D printers are going to be crippled. They will end up in a similar way to scanners, where if you try to scan in a bank note it will block it. Copyright holders will pressure lawmakers into implementing draconian legislation that will do nothing to benefit consumers and everything to benefit large corporations. Politicians in the US will attack them on the basis that they're 'socialist', because Americans don't seem to have a clue what socialism or communism are all about - only that they're bad.
Continuum's "corporate congress" is actually pretty accurate.