capitalism does not beget a wide range of meat for the average household. people eat "the same 3 dead animals" because it's what's affordable and even that's becoming less and less true
Capitalism is what gives people access to meat for regular people...
There are lots of types of meat you can have, like duck, chicken, seafood (don't really know how affordable seafood is), cow, turkey and whatever a hotdog is made from
There's more than three affordable animals lmao. Even if you count fish as one you still have crawfish, shrimp, fish, beef, chicken, pork, lamb, venison, turkey, etc. This also doesn't even account for the million ways to prepare the meats.
I'd say either you live somewhere where ALL those things are really cheap, or you don't know what it's like to be poor. I do well enough for myself and there are items in your list I wouldn't eat regularly even if I wanted, on price alone. Lamb and Venison are good examples, as are some fish despite the fact I live on the ocean. And Beef and Pork (I don't get this one) prices have skyrocketed of late around here.
Where about do you live? I haven't had a crazy price hike on beef and pork, have access to lamb and venison, and live on the coast with super cheap seafood.
I'm in New England. Beef prices have more than doubled in the last 5 years, and Pork went from cheaper than chicken to almost as expensive as beef, with most local restaurants having larger price hikes on their pork dishes than any other dish.
Scallops on the other hand are down 50% wholesale. If only I weren't allergic to them (and I have Scallopers in my family, so I can get them for free). I remember local seafood places when the scallops were the only non-lobster dish over $20. Now, I can get a scallop plate for $14 at a restaurant where the swordfish is $27.
I don't know where you live but lamb, venison, a lot of fish, and seafood in general is not affordable in many parts of the US at least. Beef, chicken and pork are the big three basically at least in my experience