That's certainly an interesting read... and one I can't really argue with the anecdata of from my own experiences. So I'll add one:

After it was too late by that author's reckoning, the parent of Radio Shack tried another venture, a "big box" store called The Incredible Universe. When that failed and they wrote it off, it wiped out the entire profit of Radio Shack thousands of stores for that financial year.

I still think of it when I'm trying to understand the machinations of large companies.

And I, too hope that the folks I worked with at RS in the 20C found better jobs, especially the poor store managers.