Yes, in part. There are BILLIONS being poured back into the city to support new...
...or enhanced FCA factories and others. Two brand new football (Lions) and baseball (Tigers) stadiums have been built...and look great. A plush Casino has been there for years. All along the water's edge there's luxury apartments and commercial development, etc.. There is talk of converting much of the abandoned housing back to park/nature-like settings. After all, there are almost 900,000 less people there now then in 1950. Real estate prices are up along with the tax base. Is Detroit Boston, New York or even Dallas? No, but it's FAR, FAR better (and improving daily) than it was. But it's population will never again be 1.6 million. The world has changed; there's more than just 4 car companies now.