RealBitcoin, you really need to be stating more clearly the "nonsense" and why, and not just write blanket statements.
If your drug is second to market, and both parties are equally invested, you wouldn't try to compete, but simply join them in a monopoly or cartel, keeping the price high - which is why there are laws against such behavior.
Unfortunately, there's centralization everywhere, because it's more efficient. For instance, take a company with a central management and departments who all communicate and share research with one another, it would be highly inefficient to have them perform the same task or compete internally - more like academia where research is published; that's an RBE.
Monopoly and oligopoly only form if there is a pressure to centralization on the market. You will never see a lollipop market become centralized in a free society, because there will be so many people doing it that it will become impossible.
The same will happen with any other market, if you introduce gradually introduce competition. But if you keep out competition with the iron fist of the state, and those laws, then it wil certainly become monopolic.
Your example of that company is not a free market, in a free market there would be no company with that many departments.