Remind me again why a free, "superior" operating system couldn't gain any appreciable market share in the consumer space
Because consumers will generally buy what they're convinced they should by marketing before they get off their butts and actually do research and then make choices. Windows has a major corporation pushing out advertising backing it. Whereas for much of Linux's existence it's coding was a volunteer effort, let alone having paid marketing. Why did Betamax, the superior video cassette tape format, lose to beta? The consumer space was flooded by JVC pushing licensing to anyone, unlike the more restrictive Sony -- gee, kinda like IBM/PC vs Macintosh.