What are you talking about.
Any drug can be patented again on a new use. This conspiracy theory comes from hydroxychloroquine days and it was bullshit then.
Anyone can get rich patenting an old drug, you just need to PROVE it actually works for that new disease.
And get back to Reddit...you linked a study that actually proves suramin is 100% safe but completely ineffective in a trial of only 44 with no placebo controls.