Let me explain economics to you in relation to Rhinos. The farmed rhino horn will be more available and thus drive down the price. The consumers of said rhino horn would then place more value in the "WILD RHINO HORN" creating a higher price for the less available and "more potent wild variety" and thus the reward for poaching in the wild will sky rocket. Good for poachers - bad for wild rhino. Its the same reason why some guy producing keratin won't become an overnight millionaire.No it's not ridiculous. And if we do the same with Rhino( allow them to be farmed for their horns, in reasonable conditions the same as other animals) then we wouldn't have a problem with them being poached in the wild.
You are also completely ignorant around all the thousands of petting zoos that exists for "farm" animals. Interacting with chickens and cows is definitely a thing.
I think you missed the point in the analogy in terms of the marketing of it.