Let's not pretend it's not a mixed bag, e.g.: 'European multinationals are aggressively pursuing one of milk’s few growth markets, where locals say they can’t compete.'
At the same time, the EU spends a lot of money on subsidies just so that farms (big and small) can keep their head above water. I wouldn't mind if that was changed somewhat, give smaller farms more survivability, but at the same time it's the market forces that should be changed so that farmers get fairer prices for their products.
I just read the quoted headline, but it's not about quotas but EU based multinationals extending their business / exporting milk powder to Africa, tripling exports in 10 years (2006 - 2016) and competing with local farmers to the point they are put out of business. Not sure how the EU fits in there, other than that they provide an economic and legislative climate that allows milk prices to go low enough to make such a business viable.
https://www.politico.eu/article/eus-milk-scramble-for-africa...