PR just seems to have too many problems of being 'Murikan with too many problems of it's own. The tax benefits are awesome, I'd be all over that in one of the 48 continental states, but being in PR is just way too high a price to pay, and doesn't protect you at all from the coming hyperinflation/greater depression that is due to start any day now.
(Since OP is a statist I'll throw in a fancy chart so he gets the idea of what I'm talking about faster...)
By many estimates, August is the month that China's GDP officially surpasses ours, and even McDonalds has started selling corporate Bonds in Yuan recently. Make no mistake, China's about to be the only world superpower, and their currency will be the new global reserve currency. (until bitcoin takes over of course.) Trillions and trillions of US dollars are about to be sent packing from the rest of the world, and the US Fedgov is going to have to make cut after cut after cut, massive capital controls, all while a loaf of bread doubles in price every week.
Being in a place like PR seems to have none of the federal protection you'd desire from your dollars turning to shit, and Puerto Ricans might even decide they don't want anything to do with the US anymore once we get poor enough.
Sounds quite dangerous in our modern times. That, and the people can be pretty heartless there. Don't expect to make too many friends.