it was exactly this kind of thinking that lead to Japanese automakers crushing American ones

vendor relationships do not have to be hostile. AWS has been around for a while and has never raised prices, some services have gotten 99% cheaper.

yes there's some hypothetical day where they say "tricked you, all that stuff about margin being opportunity was a lie" and they try to extract value short term while burning their reputation

but every day that goes by where this doesn't happen is $$$ wasted on trying to avoid it