That kind of makes sense, though. The tail risk of something like AWS must to be significant in comparison, so a hefty margin to insure against that seems reasonable.
Sale and distribution of things is probably much milder in its variations, and the expenses seem like they'd be more strongly correlated with revenue.
(All of this is a speculative attempt at explaining the figures, not an authoritative source on strategy. Say I have a 70 % belief.)
