It IS incredibly unfair and it's also unethical, given that they're already scraping publisher content to feed their own A.I. Unless I missed it, this article didn't have details on how the revenue - if any - would be handled but I presume there would also be some 'ticket-clipping' on the part of Google there as well.
Ie: sorry about acquiring your content and then no longer linking to you but in case anyone does ever find your pathetic indie site, we're now offering an array of solutions so that you can ditch your long-standing but now no longer needed e-commerce solutions. You have made...$177 in micro payments this week minus the transaction fees of $17.77 but cannot claim it yet as you have not met our your ad revenue threshold. Need help? Go around in circles with our chat bots until you die - we'll keep your money regardless.