I was talking GM$ not GM%.
BNTX was and will be splitting, so no change in that.
Assuming Comirnaty pricing is 4x and COGS unchanged, the GM$ depend on sales.
Thus, sales could drop 75% and still produce more GM$ since both sales and COGS drop 75%.
Bigger sales drops and fewer GM$, perhaps my 50%.
I do agree with your comment on valuation of declining sales re: PFE.
I prefer to treat sharply declining sales as a net bolus to NW.
But in the case of Comirnaty, we have the bolus and then an on-going product that could be stable YoY for a long time, much like flu vaccinations.
It is astonishing what foolish things one can temporarily believe if one thinks too long alone ... where it is often impossible to bring one's ideas to a conclusive test either formal or experimental. J.M. Keynes