Cereal companies spend lots and lots of money on advertising.
Both are probably true to some extent, and would vary a lot between different orgs.
Or worse, you removed the workers and left the 'telephone' people.
In my anecdotal experience, MOST companies don't take any time to understand what they are cutting.
They kill "Project X" so the easy answer is that everyone involved with Project X must go. Regardless if they were useful or could be useful elsewhere.
Or they cut by salary, employment length, etc.
Slack hasn't been a thing for like 40 years, in fact it's mostly the opposite I'd argue where there is such little slack that employers often steal wages from their workers to gain even more profits.