[Revolting cat!]

The world of operating systems has been wider than Windows, MSDOS and Linux, and that’s the point. No one’s comparing Windows to ONLY MSDOS, although unfortunately, Windows, for reasons which once had to to with backward compatibility carries MSDOS’ weaknesses to this day.

[867V309]

YOU were comparing Windows, new vs. old: But none of what you say makes the Windows OS any better than it is and has been. 2013, and as it was in 1983, it is still a single user machine ...

Of course MSDOS wasn't Windows, but it was the MS operating system.