Airbnb and all Airbnb competitors are drawing on the same housing inventory. There’s not something clever or cute a competitor can do to “hack” it because property owners are unlikely to move to a competitor that offers less compensation

In any case, I really want to move to Europe long term, potentially migrating

If migration is on your mind rather than DNing take a look at skill shortage lists for different countries, i.e. the ones they are looking outside their own country for and giving preferential treatment to.