The drug costing more does not equate to you earning more, it means the company you work for earns more.
Which might or might not translate to you earning more money, but the people in the chain 'above' you will each want a slightly larger share as well. Plus why should they pay _you_ more when they can find people willing to work for the industry average?
You're not going to see a raise if drugs get more expensive; the company is only interested in paying you the minimal possible amount and giving everything else to high-ranking shareholders. This is a shareholder/roi-optimising economy, I'm afraid you are not in any position for anything.
Quite strange for me, in Europe it's the other way around. Biotech engineers earn about double of any other type of engineer, software, mechanical or otherwise.
And what everyone else already said: raising prices will almost never result in the engineers getting more money.
I worked in Biotech in western Europe for a few years before switching to pure software work. Biotech sector is very small, few openings and all of it concentrated in just a few parts of the world. Money is slightly lower than generic webapp dev work (at least at the companies I know of), probably because universities are pumping out a huge oversupply of viable candidates with PhD/MSc (majority of them quit Biotech / never find related work).
