My two cents:
- Comparisons between PR and other countries even a few years ago need to be re-evaluated IMO to take into account current data.
- PR is secure from invasion because it is part of the U.S. Try and mess with PR and the wrath of the U.S. military will rain down on you.
- Security from foreign enemies does not guarantee an economy will not decline, ala Detroit, Illinois, etc.
- PR is in decline and will not reverse that trend for decades. No companies, let alone high tech companies, will relocate to a Spanish speaking country with an unskilled, declining workforce. PR has no skilled skilled workers and will not attract tech positions when ample opportunities exist elsewhere. Companies want a "follow the sun" customer service, but not in PR when India, The Philippines and European countries already provide 24-7 services. Additionally, any country lacking a reliable source of workers, power and water is a non-starter.
- Without workers and businesses, PR will continue to face a declining tax base. Efforts to raise taxes on workers and businesses that remain will lead to more closures and departures to the mainland.
- Living in PR will increasingly be suitable only for survivalists - that is, folks not expecting sustainable and reliable commercial power and water.
- Property values will fall between 5% and 10% a year for at least a decade.
Other than that, my crystal ball tells me nothing more! Please do not be offended; trying like heck to be optimistic about PR but cannot see how.