>the end user doesn't have to install any of it
>Maybe all PC's should come with this bundle on CD.
An experienced PC user formats his OEM installation and installs a blank OS.
The typical end user has no idea of what to install or not (Like "What is Acrobat Reader and why do I need it for PDF files?") I guess such users are quite happy if their Windows installation comes pre-configured with software and codecs which cover IMHO basic functionality any desktop installation needs. He/she just wants to click and it should work. If something's not working they'll just give up, complain, or try to install the software all alone (like Flash), and probably also install a toolbar or two and Google Desktop search while doing so.
To get my point, here're two examples of user experience level I consider as "typical end user":
a.) The Windows XP search assistant is annoying. Can it be disabled?
b.) If I open a avi file i just hear the music in Media Player, but see no video.