I agree with Gowdy. This is the perfect time for defining rules for the block directory.

I'd suggest WP.org provides an universal way to create a place for upsells or promotional messages. Something like admin notices. And it should be restricted to use the same code that WP.org provides. That way, users see the promotions the same way, thus, can provide the same experience if they use other blocks, while still provide a way to fund businesses.