What was changed
Thomas Watson Jr. inherited a company still identified with punched-card tabulators and deliberately broke the old product logic. TIME credited him with moving IBM into the computer age after succeeding his father.
The decisive bet was System/360, a compatible mainframe family. IEEE Spectrum described the project as a $5B program that nearly destroyed IBM because software and manufacturing delays could have left customers waiting for machines the company could not deliver.
The gamble paid off. IEEE Spectrum reported revenue rising from $3.2B in 1964 to $8.2B in 1971, and the Computer History Museum calls later IBM mainframes descendants of System/360.
What it achieved
IEEE Spectrum reported IBM revenue rising from $3.2B in 1964 to $8.2B in 1971 after System/360 shipped.
Why it worked
Watson Jr. used succession to change IBM's product architecture, not just its leader.
System/360 made one compatible family replace specialized machines, reducing customer lock-in anxiety.
IBM absorbed huge execution risk while competitors still sold narrower systems.
What can be applied
A family handover can justify a platform break when the successor is willing to retire the old architecture.
FOLLOW THE EVIDENCE
The sources
- Thomas Watson Jr.: Master of the Mainframe time.com
- Building the System/360 Mainframe Nearly Destroyed IBM spectrum.ieee.org
- The IBM System/360 computerhistory.org