Deserted Venice contemplates a future without tourist hordes after Covid-19
https://edition.cnn.com/travel/article/venice-future-covid-19/index.html
It shows how risky it is to depend heavily on one industry. Though it's not as serious as Venice, Namba in Osaka is also suffering from lack of Chinese tourists. Especially, drug stores for them are forced to close.
Though tourism can be an opportunity to develop cities, it would be important for them to diversify industries in the long run.
