European Cities Test Measures To Control Tourist Flows
spiegel.de
spiegel.de
Additionally, they were really good at hedging oil prices at good prices. (Except in 2011-12).
Finally, all of the pilots are contractors, as are many of the flight attendents, which reduces the fixed costs associated with the (legally-required) staff.
FR are also willing to kill their own margins to break competitors, which means that competing is hard.
The solution could be simple - tax tourism related businesses more. Tax plane tickets, AirBnb hosts, hotels, restaurants, car rentals, etc, but use something like congestion pricing. If the tourist is housed in an area that benefits from tourism, tax it less, or even sponsor a small part of the price from the taxes collected elsewhere. That is for the short term shaping of trends.
For the long term, the problem will fix itself. When prized local culture doesn't live up to par, then tourism will decline in that region.
But there is also an opposing viewpoint - tourists or locals, we are all people, living together in this small boat we call Earth. Worrying too much about keeping cultures separated could be seen as a form of conservatism and nationalism.
Worrying too little could be seen as colonialism.