Compare that to establishing a bespoke chemical process for each drug, or messing with purification of natural biologicals, or fusing antibodies to protein or peptides to grow inside a whole cell.
They should be actually cheap. They aren't because new.
Humira is quite a bit harder to manufacture cleanly than a peptide or mRNA, and still harder than a plain solid state synthesized and folded protein. It requires a lot of post translational modification, which means cellular machinery, which means a whole bacterial cell you now have to grow, feed and remove from the product.
Agreed that there should be a faster way to trial drugs and get them to market. Though I've heard that the "slowness" of the FDA is actually overstated; not sure how true that claim is.
> How would you weed out the snake oil?
The current paradigm is "better 10,000 people die of neglect than 1 person die of snake oil or quackery." I'm okay with a little bit of snake oil if it means that more drugs are being introduced more quickly, and I trust practitioners and patients to, more often than not, determine the therapeutic regimens that are right for them.