If anything, I see zoos closing due to outcry from animal liberation organizations. Let's face it, there are certain mishaps that happen in zoos every year that could be used to show that wild animals have no place in zoos. Death, both animal and human, and escapes would be major talking points, as would low-quality enclosures.
After the Muskingum Farm disaster, exotic animal regulations are brewing for private keepers. The groups that lobby for these regulations don't view zoos as much better than private keepers in many instances.
Hope i'm wrong, but with every sensational headline we get one step closer to these people trying something bold. They are well-financed and politically connected beyond belief. They have, in one case, a 150 million dollar lobbying budget. It's a matter of time, IMO although their chances of succeeding are probably not good as long as the general public continues to love going to zoos.