Until there's a solar flare and instead it's just cost them 1640 years. Or a catastrophic computer virus. Or any number of black swan disaster scenarios. I'm a tech guy and I do think that this is good news. I just hope that the people in charge of designing these systems have also thought about what happens if these systems catastrophically fail. And that measuring things like '820 years saved' are only really claim…
So if we're talking about "black swan disaster scenarios" or "catastrophic computer virus", I don't see any difference between Estonia and other countries.