This combined with, THERE IS NO BUSINESS INCENTIVE TO DO SO... is pretty much a reason. Time is a zero sum game. If I can make features/fixes that brings me mo

This combined with, THERE IS NO BUSINESS INCENTIVE TO DO SO... is pretty much a reason. Time is a zero sum game. If I can make features/fixes that brings me money, why would I spend time/money/effort to design system for effectively... well, NOT make money, at the cost of the former?