"What if Steve Wozniak made the Apple computers" (NB: he did work on an early version of the Mac - hard to say how much of that made the final cut).
...then they'd most likely be a footnote in history along with all the other late-70s/early 80s personal computers that sprang up with the availability of cheap microprocessors like the 6502 and Z80 (PET, TRS-80 and a shedload of other, long-forgotten systems). Wozniak may have been a genius at electronics - but other genius electronic designers were available. The Apple II was technically better in some ways than its arch rivals, the TRS-80 and the PET - which arrived within a few months - but it was also more expensive.
They say "build a better mousetrap and the world will beat a path to the door" but the reality is, no, the world will stick with whoever has the best marketing. (Witness IBM managing to turn the most appallingly mediocre computer of all time into the industry standard). You need a Steve Jobs to take your idea, smooth out the sharp corners, make it easy to use, put it in a cool box and then market the living heck out of it...
The history of Apple is a repeated litany of "Apple didn't actually invent x but they were the first to turn x into a must-have product" (Even the Apple 1 wasn't the first personal computer with integrated video - the Sol came first).
The video is rather dismissive of the fact that Jobs "only" designed the case for the Apple II - yet that was likely a significant factor in its success: Internal expansion? Great. Internal expansion accessible without a screwdriver via neat Lego-esque clips? Wow! Floppy disk interface, great. Two floppy drives ad a display stacking neatly in a purpose-designed depression on the case lid? Winner! The Apple II case probably doesn't get enough credit c.f. the Mac.
Somewhat ironic that the Apple II was an extensible system with easy access to the internals, while its arch competitors, the PET and the TRS80 relied on external expansion...
As for the Lisa, yes - it was a commercial flop, but it did put the concept of a GUI into the public's head which made the Mac a far easier sell. Price wise.... well, it was surely cheaper than a Xerox Alto. 16/32-bit systems with high res graphics were very expensive in the early 80s.
Now, the interesting "what if" is "What if Xerox had teamed up with Apple to produce a GUI-based Xerox Personal Computer to sell to their corporate office equipment empire?" - would Xerox have been big and ugly enough to beat IBM at their own game?
