IIRC, most of the EU, has already ordered enough vaccines for the whole population.
The fact that you've pointed out, still doesn't still well with me though. If most developed countries will already have been vaccinated, are they trying to take the profit from developing economies instead?
It's also likely that people on all sides of the contract thought that it will be more or less over at that point in time and the clause exists solely to prevent governments from just never declaring the pandemic from being over.
I also doubt that a clause like that is actually legal, tbh.
But hey maybe I'm just to optimistic.
Well, yes, but presumably if they take long enough then EU vaccination will be done and the contract will just be cancelled. The EU has ordered enough to dose something like 800 million people, so if manufacturers are amenable at least some contracts _will_ be terminated early down the line.