I agree in general, however when you actually interact with these places you soon realise that the markets are completely skewed by corrupt practices of various kinds (not just cash bribery). I don’t know whether you’ve ever been to Kenya or anywhere else in East Africa but it’s obvious how things work after just a short time there.
What’s described in the article is a situation where the government has introduced export licensing and endorsed a coop system that effectively cements organizations in their current positions in the market.
It’s not just governments that do this, commercial interests do too by acting as gatekeepers.
I am by no means “putting capitalism in my gunsights” here - however it’s clear that one of the issues is corrupt and poor regulation. That’s not to say there shouldn’t be regulation, but that it should aim at stimulating a fair market where honest traders are able to transact freely and dishonesty is punished.