That link wasn't there originally, nor (IIRC) did it say "estimated".
Given the new information, then it doesn't matter. AWS is running at some sort of loss, but the question is why are they running at a loss. Are they spending lots of money on new infrastructure and scoping out new locations for data centers? That all costs a lot of money to implement and it would show up as a loss. Given how well the rest of the company is doing (AMZN would have had a profit if it were not for AWS), it sounds like revenue from other Amazon operations is going to provide capital for AWS to continue building. AWS isn't going anywhere soon if they're continuing to build out at this rate. There will be a time when the demand starts to plateau and they don't need to spend quite so much every quarter to expand. At that point they start raking in the dollars.