-IBM was at its peak in the '80s before losing its direction and beginning layoffs and a long slow collapse, reducing it to its current state as a shadow of its former self.
-Microsoft was at its peak in the '90s before losing its direction and is now starting its collapse with major layoffs a couple of years ago.
-Google was at its peak in the '00s and is starting to lose its direction.
-Amazon is at its peak now in the '10s.