Given that an independant funk band hired someone to design not one but two fonts purely for their own marketing material[0][1], I think you overestimate how much it costs to hire a font designer relative to the average film budget.

[0] https://www.youtube.com/watch?v=axrf_RPBJ6g

[1] https://www.youtube.com/watch?v=HJEn7HcpfXE