Democraps and unions sucked it dry.Capitalists used up Detroit and left when they were done
Well lets look at the culprits
Unions stood up for the workforce insisting on good wages, health benefits and a chance to someday retire. Detroit autoworkers did not retire as millionaires
The capitalists looked out for short term profits, designed crappy cars that nobody wanted to buy, refused to invest in modern facilities and then abandoned the city for greener pastures
Who is the villian here?
The UAW, when they forced the US auto industry into paying wages and benefits that were not in line with the skills required for the jobs, they destroyed the competitiveness of the US car industry. When they negotiated "no-layoff" contracts they took away the work ethic of the workers. Combine that with a greedy 'don"t give a shit' management, bribes to democrat politiicians and the result is a dead corrupt city.
Democrats, unions, liberals, and minority rule = Detroit