AGAIN, you too, are making the fallacious assumption that there's a second computer near by to download a browser setup binary from the internet.
Which is hardly giving the
consumer a choice. OEMs have always had that choice.
The correct thing to do would have been to add a package manager, and give the user a list of browsers (and even other types of software) they can choose from, the PM would then go off and install said software, and the user is ready to go, all from the same machine without having to revert to sneakernet installation techniques. Why don't we bring back the floppy disk while we're at it?