Let’s say the home Linux market share continues to improve over the next few years to the point that it overtakes Microsoft. Sure, wishful thinking, but give it a few years after that, and you’ll have average people getting used to Linux the same way they are now used to Windows. I don’t think it’s that much of a stretch in this hypothetical to see corporations seriously consider switching due to combined factors including cost and employee comfortability with Linux. Losing the home market is a big deal.