Yes I have been a tourist in many many cities and I've seen the effect of industries. I've also traveled to many of the cities off the beaten path that have no tourism and have no other industries and I have witnessed how they've died. I was born and raised in a very small town in rural Nevada that is reliant solely upon the mining industry. I watched the ups and downs of that and I watched them trying over the last 20 years since I've left there try to become a tourist town and trying to encourage other industries because they realize that they have to do something and there's no other industries out there that want to be there want to move there want to stay there and people don't want to live there. Because there is nothing there to keep them.

Edit: also very few can afford to live in that town either the cost of living is skewed unless you are working at the mine, 12 hours a day, underground. Tourism isn't the only thing that destroys towns