This is something I have seen before, possibly a long time ago, possibly from an early pioneer in the industry.

The real tldr is that these businesses are looking for people that not only can perform, but can improvise and improve their environment.

Not all businesses want this. Many many places pretend they want a talent, but then fund ways to weed them out or develop them into b/c talents. The Bs do the lion share of the work,feeling like As, and the Cs either stick around forever or eventually become D talent that actively hinders progress.

tl;dr:

do better or gtfo

This all tracks pretty well. The ability to learn is a big, big signal.