doctors and big pharma cannot make any money off of prescribing either of those treatments, so they will never be studied for their effectiveness or prescribed

I agree with you that big pharma bankrolls the great majority of clinical trials and studies and they will never, ever pay for a trial or study of this treatment. The government does pay for some studies, and this treatment, if proved effective would undoubtedly save the federal government many tens of billions of dollars a year, so there's a wee chance it could slip through the conventional mindset of the CDC and get studied.

I think it is wrong to say all doctors are so strongly motivated by profiting off their patients that they would never prescribe this treatment, if it were shown to be even marginally effective. All too many doctors become fixated on the financial rewards of their practise, partly because they are not selected into med school based on the mental qualities required to deal compassionately with the ill, so many of them lack these qualities. But a signifigantly large number of them are good, conscientious people. You have to look for them, but they are there.