“I have a good friend in the research business, who says he has seen many promising drugs for cancer, just magically just up and go away. “
Your friend is misinformed, I’m afraid. All Pharma companies would love to develop successful cancer treatments and many are doing exactly that as we speak.
This conspiracy theory sickness that pervades social media is Fake News of the most pernicious and dangerous sort.
If folk thought about this stuff analytically and calmly then we’d all be a lot better off.