But just for clarity: HP sold webOS to LG (not Samsung), and it (mostly) kept it's webOS name through various aquisitions and rebrandings. See http://www.lg.com/us/experience-tvs/smart-tv-features and https://en.wikipedia.org/wiki/WebOS#History
Samsung's Tizen is it's own thing -- not some acquisition or rebranding of webOS.
That was 20 years after Windows came on the scene.
Parent poster was wondering why 1980s/1990s HP let Microsoft commoditize hardware (courtesy of IBM). I think the answer is the same as for IBM: old management who couldn't see the revolution coming. After 40 years of Cold War, where the business landscape had been more or less stable and consistent, people struggled to conceive the notion that fundamental shifts could happen.
Today it wouldn’t be an issue, but in ‘09 or ‘10 it was non-trivial.
Great UI design though. I’m still amazed how long it took for others to steal the card metaphor and some of the other great features. Like the Touchstone. We’re finally living in that world most of a decade later.
That’s when I HP was in real trouble. Instead of pursuing new markets in mobile they retreated back to PCs, printers, and services. They were trying to grow into a market o it’s way to stagnating.