Sounds like dairy in Canada. We basically have a taxi medallion system for milk.

Result: high prices (basically a regressive tax), personal import limits that haven’t increased in 3+ decades, artificial barriers to entry (good luck becoming a dairy farmer unless you inherited a farm or take out a massive loan before even starting) & low per capita production for a country that could be a dairy exporting juggernaut.

New Zealand is currently the biggest dairy exporter. Canada, despite being a massive agri-exporter for other products, not even in the top 15.