It's probably more available in the US than in Ethiopia but it's still a part of the cuisine. Interestingly, according to the guy who runs my local place, mushrooms are also found in Ethiopian cooking but are often left off the menus because (his words not mine) "white people don't think mushrooms are authentic".
I live in Ethiopia. This country has the highest number of livestock in all of Africa. So it's available in quantities. The price for a kilo can range between 7$ to 20$ (if you go to specialized places). The price hikes was driven by high inflation driven by some economic growth. So meat is moderately expensive but it's a regular menu item at least in the section of society i interact most with. As a comparison, It was 3$ a kilo, markedly cheaper.
It’s relatively expensive, depends on your income level. Chicken beef and goat are common. Folks in the country have better access than in the cities.
Plus, people follow strict fasting (up to 210 mandatory fasting days in a year) ... at least the Oriental Orthodox church followers which make up 40-50% of the population.