I know “ownership” isn’t the right word, but can’t think of the right word at the moment. What I’m talking about is if you “Get Info” on a file, “Open Any Files” shows up as the default “Open With” application.
This frustration has happened frequently enough that I uninstalled “Open Any Files”
This is a Launch Services issue. And it's a bit of a beast to work with too. Even command line syntax is a pain. Apps register with it and get in line fighting for who gets to open what files. The most effective way to get it out of there is to delete the app and then rebuild the launch services database. Even if you make changes in Finder, if the app is still there and something rebuilds that part of the database, it'll just reset again.