Xerox was a weird mix. Insightful enough to fund PARC, but blind enough to not understand the computer market. There's a section in "Fumbling the Future" describing how Xerox higher-ups could not figure out why people thought the Alto, with it's bit-mapped / mouse-based interface was in any way different from SDS/XDS minis with a set of front panel switches and serial terminals hanging off the back.

MSFT maintains a research arm (MSR) which routinely produces interesting concepts. Not that they would ever try to turn them into products. So maybe MSFT also turned into Xerox.