seems to me that puerto rico is in a plenty bad situation even though they are not currently on bitcoin.
being on bitcoin would provide some helpful side benefits such as seeking information from the internet instead of from the television in a case where it could pay to be better informed about the world. possibly having a better chance to have evacuated.
having the timely information and resources in puerto rico, the best decision would have been to evacuate.
For the unfortunate ones who are stuck in the bad situation, it is a time for the community to come together and help each other without regard for expenses. this is an alternative incentive.
If the whole world suddenly becomes like puerto rico all at once fiat or gold wont save you. you will have more pressing concerns than your wealth.
Without regard for expenses? I'd like to believe people are that philanthropic in general, but I don't think so.
Its not altruistic as it seems.
You in that situation are just as endangered as the next guy. it is simply common sense to increase your own security through cooperation.
Unless you are a fucking idiot and banding with some looter scum group. but your probably going to get yourself shot.