"Cost per bottle needs to go down"
I doubt you'd find much, if any, disagreement at all, not from me for sure. Although for us it's still affordable & justified even at ~$4 Amazon.com prices, which is why I buy cases every month for my soccer (teens) and volleyball (college) athletes. They absolutely thrive on the stuff!!
Bottomline though is knowing for sure what price point would result in a net increase in revenue. For all we know they could have it right on the money.
I suspect that their production costs are relatively high and not being helped by increasing tranportation and milk costs, as well as perhaps the other ingredients. Add the debt load and I'd not expect any price cuts soon.