Oh, I always thought the reason VHS won, was that VHS allowed porn to be distributed on VHS tapes, whereas Betamax and Video2000 (owned by Philips) didn't allow this. Philips and Sony thought it would bring down their reputation. VHS - not being tied to any one manufacturer in particular - could get away with porn.
Video2000 was superior over either VHS and Betamax BTW. Even on ordinary TV sets the difference was very much notable (Video2000 could also do noise free stills for example).