Same in Greece, the countryside and even the islands are dying or declining. Everyone is moving to Athens or nearby big cities. Even most greek islands have become huge only-summer resorts and a large airbnb, most of their villages are almost empty during the winter. There are various reasons but the most important ones are that a big majority of properties has been bought by foreigners as vacation homes and there is no incentive for locals or other greeks to go there and create businesses for noone mid-winter without schools, doctors, etc. Add to that younger generations don't want to stay and work as farmers, bakers, builders despite the fact that in most of these professions are in real need and can make great money there. People prefer the easy money from airbnb and property selling to foreigners.

This tendency started long before airbnb and foreigners started buying a "big majority of properties".

People have been moving to cities for decades now. Many of humanities recent developments make much more sense at scale so people are going to places with that scale. Some prefer a quieter environment and don't move but most people rather have opportunities, jobs, services, etc and all that is made much easier when lots of people are concentrated in a smaller area.

It is sad what you mention.

The commoditisation, clustering and gentrification of landscape and living is world-wide phenomenon.

At Corsica FLNC fought with bombing against hijacking of landscape by vacationers. But xenophobia solves nothing.

Revolution? Slow collapse? Some way out of the cities and back to the countryside? Idk. Time will tell.