not a trick question (or is it?):

if markets produce optimal resource allocation, why does no major company uses market forces for its internal operations? why do they all rely on managers and collaborative work?

I agree with your point, but I'll counter with: 

Asynchronous information control

Markets can't be effective if they don't have access to information. 

Companies use centralized decision making because it allows them to keep the insider information inside until they can use it to maximize their internal benefit. 

As access to information equalizes, markets become more effective and accurate.

Working on /impact ||


Abundance Economy book: book.abundance.id

getting closer :)

but companies don't even use "internal markets" among its employees (think Amazon or Walmart, with massive workforces) to make decisions..