That's completely different and separate issue from AWS customer data (for example someone running e-commerce software on a linux VM).
3rd party seller sales pay Amazon commission on each sale - deciding which products are selling well is just a matter of Amazon doing a SQL call on their own sales database (much like a physical retailer may see what brands/products are selling well)
We built are service in similar vain. Nothing can reside under authority on non-EU entity, and nothing can be hosted on servers owned by non-EU entity. This effectively removed AWS, Azure, GCP and Alibaba.
And still, we had plenty of choice.
We specifically picked “boring” cloud provider. No thrills cloud vendor which has core business in building infrastructure rather than snooping on customers.
Would having a 3rd party host the services in the EU meet your requirements? Or having data residency restrictions with strict key management, EU based support, and access transparency/approvals?
IMO Google is also taking this seriously, but I am genuinely curious if any off the above would meet your requirements.
Amazon's product people also don't look at third party seller statistics to decide which products to sell themselves. Until they got caught doing just that.
To assume that they don't look at data feels naive.
A German super market chain with online ambitions has a rule that nothing touching their pipeline can be hosted on AWS. Want to sell them SaaS? You can't run your nodes on AWS. I consider that to be reasonable.