> Some can't get other, e.g. countries living off tourism.
You mean countries like Greece which destroyed their local industries, and eco systems, in favor of tourism and can't go back ?
People have been warning about these things for decades. If you build your entire economy on a flimsy and unsustainable business model you'll lose at some point.
It doesn't really matter if it feeds millions or not, the unsustainability will make it crash sooner or later, the longer you let it go the harder it'll be.
I am sorry for the people who worked there, and all in to give them another meaningful job
You can't. Some want that job. Some can't get other, e.g. countries living off tourism. It's a big, global industry feeding millions.
Easy to say working on a computer.