> we sell it with 1$ [sic]
Your profit here is zero, in your own hypothetical scenario. Help me understand why the Math is different.
> competitors will not be allowed to make this for 10 or 20 years
You didn't mention your stance on patents and/or intellectual property. If a medicine is patented, would you be in favor of stealing the patented ideas from the inventor in order to lower costs for life-saving medicines through increased competition? This sounds nice, akin to stealing a loaf of bread when you are hungry, but I can't help but think a society that condones stealing inventions from inventors would breed many inventors. Then we are left with the "nobody made the medicine" problem.
EDIT: And by "inventors", realistically I mean "firms willing to sink hundreds of millions of dollars into R&D".