The career chances are not in favor of attracting somebody to finance this. Too many rich boys parents finance their kids license and even ratings. The black death of "pay to fly" at some airlines is all around as well.
This leaves only a few choices:
(1) mom and dad
(2) get hired by an airline to finance the license (works for 16yo, but hard later)
(3) get your bank to finance it
(4) look for private financing, i.e. crowd funding or the rare sponsorships