Never believe a company that you are part of a community if the content you create for them cannot be exported and published somewhere else. I am especially sceptical if someone says they never sell.
The users were always the real service provider. All the value is in what they tell each other through their data. All Komoot does is aggregate it, supply the infra structure.
The only way to stop owners pulling the rug underneath all this community given content is by keeping the content open source. Promise the users you will do best with their data by keeping it out in the open so that if you don't, someone else will. Keep the door ajar.
Unfortunately this is another "if we all just" solution that humanity seems unable to do.
But otherwise this is really something that tourist organisations could champion, in combination with national mapping services. It's not like the routes are somehow obscure, or user-generated they're often national trails strung together. Switzerland Mobility is a good example of this. You can also hook official weather providers. The fact that we need private apps is bizarre.
This happened to pinkbike.com when they sold out; you need to view these sites and communities as vectors. https://bikepacking.com is good right now and there are a lot of legit contributors who really care about bikes. This will change so engage how you want with open eyes.
About Pinkbike Trailforks, I submitted some trails to their platform to find out users needed to be logged in to download the GPX, also to discover they had edited the GPX XML to force/steal their own copyright on top of mine.
Never believe a company that you are part of a community if the content you create for them cannot be exported and published somewhere else. I am especially sceptical if someone says they never sell.