Parents need to be picking up the slack and teaching their children these skills. For all of the helicoptering modern parents do, you'd think watching over finances would be part of it.
The main problem with teaching financial literacy is that you have to be literate yourself in order to teach it. Sadly, most peoples parents just don't fit the bill.
Banks might not like the fact that a new generation of consumers wants to save too much, don't want to carry a credit card ballance, don't want to buy homes with mortgages they have to pay for 30 years, would rather buy a used car with saved money instead of finanancing it and so on.
As much as the media harps about "financial illiteracy" there are also industries that thrive on that illiteracy.
In general whenever there is illiteracy someone will take advantage of it. In this case I think it is a multi-billion dollar business. That business will try to go against education.
It could very well be that lobbyist for large financial institutions would try to influence the curriculum. It would "court" the state education systems to make sure the "right" stuff is taught in the financial literacy course.
I also can see this subject be as hot as religion and politics and perhaps that is also why it is not taught.