The richer cities will hang on for a while yet but cities like San Bernardino have already disbanded their police dept. and contracted out with the Riverside County Sheriff dept.
Vallejo was a precursor to exactly what this article is talking about. That was several years ago.
One thing that will help this to collapse sooner rather than later is that, unlike the old USSR, people are free to leave.
And they will. They already are. But it will get MUCH worse.