Business English

Nowadays I'm teaching Business English for adults. I don't know if someone thinks the same as me about the Business English courses. I think is one important part of the language, but they are not always focus on Businesses. Maybe your students are waiters or or in my case, one is studying advertising and the other one is working for a company that organizes congress or meetings. Most of times I have a Bussiness English book in my hands, I can see they just focus on Money, Banking, Brokers,....and what if the students are not in any job that involve these aspects of business?What do you usually do? Have you ever been in this case? Do you think the same?