I wonder how it looks if you consider all the companies running on AWS and the engineers that only use AWS. 1 out of 153 working for Amazon, but I guess what I'm wondering is how many depend on AWS.
In that case you should also consider all vendors/suppliers who manufacture and ship for amazon either exclusively or >50% . That number would be lot larger than engineers on AWS.
Amazon's scale and reach is frighteningly massive.
AWS is the magic that allows Amazon to scale its operations. I wouldn't be surprised if the Retail business was getting discounted (possibly free) rates for AWS products.
If the US was serious about antitrust, breaking AWS from Retail would probably be the best thing it could do.
