This is distinct from, say, Einstein's theory of relativity, which was a solution from a direction which no one was looking. Everything Steve helped create was already underway.
The Mac was hardly the only game in town at the time. History does indeed belong to the winners.
Go and learn about Vannevar Bush and Memex, Ivan Sutherland and Sketchpad, Doug Engelbart and his contributions like the the Mouse and his oN-Line System. The history of modern computing is simply not as black and white as you are trying to portray.
Finally, anyone that has used both Windows 1.0 (and 2.0 for that matter) will tell you just how awful it was, especially when compared to the Macintosh. Microsoft didn't come close to the ideas presented in the Mac until 1990 with Windows 3.0, and arguably it was the 3.1 release in 1992 that was useable.
You could easily say that about the "true" inventors.
The point is Steve Jobs _was_ heavily involved in all of these major breakthroughs, spanning decades, industries, and personnel. He is an incredibly important and influential figure in the history of technology. Not sure why people feel the need to downplay his role when the very people he is supposedly stealing the spotlight from will attest to his genius (with the exception of Jef Raskin of course, who was a bit of a Svengali himself).