What hurt IBM was not lack of innovation. They got that part right. It was incremental production economies, the thing the article says is a big-company problem. Others could make generic PCs cheaper than IBM. Others could make disks (which were invented at IBM) cheaper than IBM. IBM eventually exited the low end entirely.
3M, GE, and du Pont are big, old companies good at innovation. Westinghouse was too good - too many high-tech products before their time.
Gerber, the baby food company, doing something stupid is not a good example.