The problem with this logic is it means that the largest ever theft was some hunter-gatherer stealing a spear 100,000 years ago. That's worth almost 10^3000 dol

The problem with this logic is it means that the largest ever theft was some hunter-gatherer stealing a spear 100,000 years ago. That's worth almost 10^3000 dollars now, you know! At some distance in time, returns on capital are no longer adequately approximated by "x%APR". I think this distance in time is at most around 150 years, and even then only in the USA. In most of the world, it's far less than that.