Building the System/360 Mainframe Nearly Destroyed IBM Instead, the S/360 proved to be the most successful product launch ever and changed the course of computing April 5, 2019 https://spectrum.ieee.org/tech-hist...-the-system360-mainframe-nearly-destroyed-ibm
Brings back memories of when I was a Computer Operator. We used a System 360/40. Photo attached. Me in the glasses. This would have been 1983, two days before it was replaced by a boring IBM 4331.
IBM was always had the best marketing and financing along with more muscle to write software but I've always read hardware wise the rest of the seven sister mainframe companies had them beat hands down. Great link, thanks.