>I don’t think that culturally IBM ever really felt that the PC was a true IBM product.

That was true everywhere. I worked at a mini company at the time when the PC came out. People in that company looked at the PC as a cool thing, but not a real computer.

In 10 or so years, the PC killed of almost all mini computer companies. Some even speculated that was the main reason for IBM to create the PC :)

They were also clever being on the first line supporting Linux back in the 2000's.

Nowadays not only they own one of the few UNIX proper left standing, they also own everything Red-Hat contributes for.