I went to India last year and found the vegetarian burgers awful. I think the American palate requires a little bit of a different taste than the Indian.
That's definitely possible, yeah. I already didn't eat much meat (where I live people aren't as crazy about meat as they often are in the US) and was used to salads and veggie sandwiches and stuff for meals.
But I agree, if they choose to bring these offerings to other countries, they're going to have to adjust the recipes, as I'm sure they will.