You are entirely right!
However, they are entirely different monetization business models that we are offering our WordPress.com users.
Our Simple Payments block for example let's you sell directly on your site: https://en.support.wordpress.com/wordpress-editor/blocks/sim...
People are extremely creative in how they use it, basically turning sites into stores or kickstarter-like campaigns with that little feature. We are looking into extending this functionality.
even if it was, people have shown over and over that they prioritize convenience over privacy, and businesses simply aren't conscientious enough to try a different way.