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You expend a lot of effort getting people to buy your product and they’re happy with it.
You then go back to your satisfied customers and tell them what they have is now mediocre, so they have to move onto your latest and greatest product version. You see this everywhere, from washing powders to family cars, so it must work for enterprise software, right? So why are your no-longer-happy customers now chasing you with pitchforks and burning torches?