You can scream at a TV all you want, but that's never going to turn you into a horse.
On a more serious note, the industries that made these cities what they are are mostly gone now, and they're not coming back. The thing that made these cities attractive for these industries is no longer all that relevant: their location on the water. These days, there just isn't much to make these cities attractive for new industries, except maybe cheap real estate, but you can get that in many other places in the US while not being burdened by 1) terrible weather and 2) crumbling old infrastructure that's going to cost a fortune to modernize. I think these cities can reinvent themselves to a degree, taking advantage of the many old buildings and such, but I don't think they'll ever get back to the population levels and economic statuses they had in the past, just like Rome is probably never going to be the leading city in Europe again.