I have heard that Moderna has limited production capability. A friend of a friend of mine has contacts in Moderna. I wondered whether they could license production with other companies. I heard back:
"It’s not so simple. This is a novel manufacturing process and these are hard factories to set up, and you need to train people on the manufacturing processes and quality controls. Moderna apparently does have a lot of capacity coming online, thanks to government money, but they probably won’t be able to make more than about 500 million doses by the end of 2021."