Some FTOs already do what you suggest.
With some of the new combined ATPL/Degree courses the students get all of the normal benefits (student loans, defered payment, etc.) that are enjoyed by any other university students. But they still have to pay the full cost of the flying training element of their courses.
Some of the FTPOs doing these courses have also searched (unsuccesfully so far) for way of making the flying element of their courses VAT exempt.
Some FTOs also have facilities in places such as USA, Canada and Spain, to enable their students to enjoy reduced costs/taxation.