The Adobe Fonts platform never gave users access to the original font software for packaging or copying in any way, so that is not an issue (or potential work around for those wearing eye patches – LOL!).
This particular issue seems to be primarily that the agreement they had with a couple of foundries is no longer acceptible to one of the parties involved.
I’m not aware of any instances where the font license is being moved from one foundry to another, but that doesn’t mean it’s not happening.
Their info on this mentioned “Alverata PE from TypeTogether was overhauled, retired, and replaced by the family Alverata.” In that case, users don’t have a choice but to update their files using the new version.
Even if we purchased that font outright, this scenario could still cause us issues. We design marketing materials and distribute them to client affiliates around the world to localize for their market. We never include fonts. If the font version we used to design the piece isn’t available for purchase at a later date, that can cause some issues. It’s always difficult to know when it’s best to update vs sit tight with the current version.
I, too, have a FileMaker Pro database I created that stores all 1886 of my font purchases from the past 23 years. It’s like a pet — I would be lost without it! :)