David's Time With Peter F. Drucker 2020.5.4
The third case where abandonment is the right policy——and the most important one——is the old and declining product, service, market or process for the sake of maintaining which, the new and growing product, service or process is being stunted or neglected.
Neither Oldsmobile nor Buick has benefited. Both are still going downhill. But the Saturn has been all but destroyed. And both GM and the UAW have continued their decline. Abandonment may take differerent forms.
The right answer may even be to do more of the same but to do it differently.
——《Management Challenges for the 21st Century · Chapter3》(Peter F.Drucker,1999)