Microsoft and IBM's 1990s collaboration on OS/2 revealed stark organizational structure differences, epitomized by a dispute over the TAB key. During development, IBM engineers in Boca Raton, Florida, objected to Microsoft's use of the TAB key for navigating dialog boxes, preferring a different key. When Microsoft's manager in Redmond delegated the decision to the Boca team, IBM escalated the issue internally, demanding confirmation from a VP-level manager at Microsoft.

The conflict culminated in a terse reply: "Bill Gates’s mother is not interested in the TAB key," humorously underscoring Microsoft's stance. The TAB key remained in OS/2, highlighting how cultural mismatches between hierarchical IBM and agile Microsoft teams shaped software development norms.