Yeah, the idea of a "file browser" as an application separate from the OS is just not something most people have ever gotten. The file browser is just "Windows" or whatever, just part of the OS.
(You can install file browsers other than the default one on most OSes, true. But how many people actually do that? Even fewer than install Web browsers.)
(You can install file browsers other than the default one on most OSes, true. But how many people actually do that? Even fewer than install Web browsers.)