I would guess that at least part of the issue there is also that the data isn’t all that useful unless it’s also exported to some format that other software can read. That format may not capture everything that the native format stores.

In another comment in this thread, I was reading the article on Adobe Creative Cloud, which commented on the fact that the format is proprietary. I can set up some “data storage service”, and maybe Adobe lets users export their Creative Cloud data there. Maybe users even have local storage.

But…then, what do you do with the data? Suppose I just get a copy of the native format. If nothing other than the software on Adobe’s servers can use it, that doesn’t help me at all. Maybe you can export the data, export to an open format like a PNG or something, but you probably don’t retain everything. Like, I can maybe get my final image out, but I don’t get all the project workflow stuff associated with the work I’ve done. Macros, brushes, stuff broken up into layers, undo history…

I mean, you have to have the ability to use the software to maintain full use of the data, and Adobe’s not going to give you that.