However, the real question is whether there's no advanced stuff because of the domain or because of the people who work there. If enough people working at a company don't like advanced math, it means that they will not use it and if you use it, your code will be harder for them to maintain, so you don't use it either. I suspect if everybody had a better grasp of these ideas, you would see them used more often.
There are a ton of CS-trained programmers who will include advanced stuff whether the domain requires it or not. It's probably hard to have student loans hanging over your head and not have a reason to use most of the education they paid for.
