> Very nice way to say "AP isn't centralized enough".
You seem to be operating under the misconception that having large secondary indexing services in the system is the same thing as binding the system to single organizations. Anybody can run a relay or appview, same as anybody can run a PDS.
> What's your current timeline to start accepting incoming account migrations back into the bluesky hosted PDS? When will account migrations officially be a recommended operation? Source: https://github.com/bluesky-social/pds/blob/main/ACCOUNT_MIGR...
When the software is sufficiently tested and implemented.
> First of all, self hosting an ActivityPub service is not prohibitively expensive, heck expensive just isn't even a word a would use at all.
This remains true only so long as the network remains under a certain size, and your posts never go viral.
> On the other hand, what's expensive is the cost of hosting the bluesky relay. What you're essentially doing is just taking on the burden/cost of data processing and hiding it from the end user.
We're keeping the most valuable part of the system -- account ownership -- from having its costs bundled with application ops. It's important that there are hundreds of thousands of account hosts. It's only important that there are 5 to 10 microblogging applications, and that users can switch between them as they come and go.
In fact, I would argue that binding user accounts to individual application instances & their governance like AP does is a massive mistake. It's much more important that you guarantee users' continuity of identity as apps come and go.