Data portability in the GDPR aimed at this (as the article says), but it was far too weak to have any effect and it seems no one cares about really implementing

Data portability in the GDPR aimed at this (as the article says), but it was far too weak to have any effect and it seems no one cares about really implementing it. The only services that implemented something that resembles data portability are e-mail providers, and there it works mostly because there already is an underyling protocol that is built with federation in mind. We really need more open protocols to make this happen. A doable strategy could be too look at markets with a lot of existing solutions (e.g. chat, task management, note taking, scheduling, document management, file syncing) and force the players to formulate a protocol that everyone adheres to. Since that will take a long time it's probably only doable for the core services, but having something like this e.g. for chat services would be incredibly useful.