But I’m not trying to convince you, I tried answering the questions :)

I was just trying to see how you’re thinking about the possible lock-in and dependency on those platforms… also exposing my real concerns with them.

To be honest I couldn’t self host anything if I’d had the fear of being lost if a tool is discontinued.

Yeah but most thing we self host are more “fungible” be it a torrent client, RSS aggregator etc. can be quickly replaced by another alternative as they hold little to no data and even sometimes the data they hold doesn’t even have any value. A document management solution however is a long term thing that holds important documents.