I've been under the impression that we don't have new antibiotics because it is not economically viable. When you invent new weight loss drug you can sell millions of pills to anyone. If you invent new antibiotic it is immediately classified as "reserve antibiotic" and the sale is restricted.
This is good example of the limits of capitalism.
When making brain-dead claims, at least be fair and compare it to the track record of other economic systems. To do otherwise is shameful.