Also, it is not illegal for the EU to be banning exports of this vaccine product. Plus, where did the tax subsidies come from? In this case it is from an EU member state. This is how pharmaceutical companies work; they plant themselves where the subsides are.
The biggest mistake that the EU made was that they trusted free market forces too much.
Either way, this is a good read, from the Global Commission of Post-Pandemic Policy: Why States Should Invest in Vaccine Capacity: https://globalcommissionforpostpandemicpolicy.org/states-and...
It talks about the EU vaccine situation well, too.