It's for those out there, that can't distinguish between Word and the operating system and think that the internet == the web browser.
The problem with a howl bunch of software you listed, is that they don't run unter Windows NT(3/4/5). This starts with the problem, that they often save their settings in the application folder (and the HKEY_local_machine trey of the registry) and not in the folder for the user settings. And ends with the path to the usersettings not beeing stored relative to the profiles folder of the user, so that the software will not work in domain environments. Not to mention caches stored in the wrong locations, rendering network profiles unusable.
Back in the active Atari days, such a software was simply called "Schweinesoftware"
Firefox/Mozilla are the most promient examples: http://bugzilla.mozilla.org/show_bug.cgi?id=74085