Someone is going to have to figure out some kind of industry that would work in your island. What happened to the pharmaceutical industry? You may notice a dip in visitors based on the new entrant to your west. I'd start with a deep business analysis and do a Michael Porter “5 Forces of Industry” analysis. PR has to have some competitive advantage others have overlooked. Young Puerto Ricans can't all immigrate to the mainland...
The Puerto Rico crisis is a government crisis. Yes, business is hurting but we do have a very diversified economy. Pharmaceuticals were big at one point and they still are to some extent, but our services sector, for example, has the right fundamentals and potential for growth if the government just got out of the way.