Exactly the second point. Bugs persist for the same reason 'bad' code/coders persist: even flawed software is generally worth far, far more money than no softw

Exactly the second point. Bugs persist for the same reason 'bad' code/coders persist: even flawed software is generally worth far, far more money than no software and very few projects have an ROI that doesn't taper off very quickly after a "good enough" effort.