There are some steak houses in Pakistan, quite a few have emerged over the last few years. Back when I was a kid, we didn't have good steaks in Pakistan but we used to go to Angus Steakhouse in London quite often, it is not that good anymore but they were the go-to place for steaks in the early 2000's.
The Pakistani fascination for American food is because of the fast food chains like McDonald's, KFC, Pizza Hut etc. Children obviously prefer it over desi food and they develop a taste for it. Apart from steak, America doesn't really have a cuisine though, but they are good at stealing from others, especially Native Americans including Mexicans. Even steak has Scandinavian origins.