Terraform supports this by setting prevent_destroy = true in a resource's lifecycle, which I discovered after I accidentally vanished an entire Elasticsearch domain—fortunately, though, not prod.
Every country they promised to, which is the core of the matter.
It's one thing to be upfront from the start about how you're going to independently produce vaccine for yourself first, ensuring nobody plans on receiving your production.
It's another entirely to promise to export and then later threaten to hold back.
Neither Pfizer-BioNTech or Moderna's vaccines bring any additional adjuvants to the yard. mRNA is inherently immunogenic. This speaks generally about mRNA vaccines and touches on that property, among others: https://www.cell.com/trends/molecular-medicine/fulltext/S147...
Yes, that's the idea: the price of sitting on a dragon's hoard of cash that's not doing anything is that its value decreases over time, so you are incentivized to actually do something with it.
For what it's worth, I took up running, changed my diet, and found that both of those in combination did effectively nothing to address my ADHD symptoms. I'm a lot healthier now than I was before I discovered I loved running, but to this day I use medication because it's the only thing I've tried that makes a meaningful difference.