The key is 100% boycotting all services provided by a company. Wikipedia’s list of Amazon product/services as reference (https://en.wikipedia.org/wiki/List_of_Amazon_products_and_services).
Incidentally, I know entire neighborhoods that don’t have other grocery stores besides Target/Whole Foods, not to mention that AWS is the cloud computing industry standard… As a personal example, my vet-prescribed cat foods are manufactured by Purina, a subsidary of Nestlé (needless to say, a separate but also extremely evil large corporation)
Being poor and living on the edge paycheck to paycheck taught me that there are a whole lot of things you can live without that you didn’t think you could.
You can literally cut all subscriptions out of your life and eat nothing but groceries you buy cheap at a food co-op and you’d be surprised how ok you are.
There’s a LOT of fat you can cut out of your life. And it makes things simpler and simple is peaceful.