I do not subscribe to the view that it's "Detroit today the rest of the USA tomorrow".
Detroit surely had it's own unique set of circumstances not present in 90% of other major US cities.
Provided, that is, lessons are learned.
I would be looking at Defence Industries right now.
See chart above. Its not just about defence. Look at the Uk you ruled the waves, now you have hardly any ships barely an industry. Unions took care of industry and and social programs took care of any available income for investment.
Tax, and spend on non productive things does not take you anywhere good. That is not to say we should not have taxes or social programs, but they need to be in proportion to the rest and available productive growth, not at the expense of. We need a dynamic productive society, sometimes goverment help is warranted, but goverment protections of industries leads to ossified industries noncompetitive like BL. Goverment itself is bloated and inefficient, I see nothimg in washington from either party that leads me to belive we are not following the same patrh as detroit writ large. The difference is its still changeable.
Yes the individual facts in Detroit are different to a more complex national economy, but with half the sates now having massive unfunded pension obligations(not even part of the federal debt above) and the federal buget massivly in defict even with near zero interest costs on its debt, what exactly makes one believe the trend is any different to Detroit. You know we have cops who retire at age 48 with full salary as pension and medical for life. The best jobs today are governemnt ones, with promises to employess the funding for which is massivley underwater.
Then we have have social security that does not take in enough to meet its obligations to retirees, we have medicare which is underfunded and obanacare comming which will turn out the same as all gov programs. We have legislation which enriches insurance companies and an entire politcal system run by the legal trade.
I could go on, but the point is that the burden placed on those who work means that things are not sustainable. The curren tax rate when you take federal, state and property is amongst the highest in the world and there is still a massive deficit which is just a future tax being incurred now.
So yes you are right, it does not have to be the whole country as you say "provided the lessons are learned" but I dont see any lessons being learned. Actualy thats not true, the current group of polls has learned the Tony Blair lesson, promise lots of stuff to people that others will pay for and you get elected.