What companies are doing so?

Governments, through the military. And... yes, they're companies.

Monsanto, ConAgra, Gates Foundation, pretty much every major food company, all pharmaceutical companies, tons of government think tanks, AMA, etc..

Your description of what these companies do is distorted. They are not actively developing technologies with the purposes that you described or even as any such consequential purpose.

Tell yourself what you need to.

https://www.google.com/search?q=monsanto+conagra+pharmaceuti...

Posting a Google search doesn't offer any convincing argument to support your supposition about the intentions and/or results of these corporations. I do understand what you're trying to say about these corporations, but the way you represented it is misleading at a minimum.