Why Didn't Freddie Mercury Fix His Teeth?

In the new Queen Movie, when Freddie Mercury applies for lead singer, they say "not with those teeth mate". Before he became a rock star it's easy to understand why he didn't have corrective surgery, he probably couldn't afford it. But after the money started rolling in, he could of taken some time off and had surgery. So why didn't he? He was afraid that it would effect his singing and more importantly his wide range.