I wonder how long it will be before Amazon starts truly transitioning towards becoming the end to end supplier/seller. It seems to me that they have strategical

I wonder how long it will be before Amazon starts truly transitioning towards becoming the end to end supplier/seller. It seems to me that they have strategically used third party sellers to bankroll the needed infrastructure and provide vast amounts of data to mine. Third party sellers can't stay on Amazon forever unless they have margin, and it's a near-certainty that Amazon could capitalize on that margin better than a third party reseller can.