This is a hysterical take. Spotify has paid Apple tens if not hundreds of millions of dollars over the years in subscription fees. And at this point, nothing is going to change that—the vast majority of Spotify users will continue using Apple's payment processing and Apple will continue to get their 30% cut. All this EU rule would do is allow Spotify to tell users they can sign up outside the app, and potentially link to that page. And in all likelihood, Apple will still find a way to charge Spotify for those signups.
And note that Apple will be required to do the same in the US once SCOTUS denies their appeal in the Epic trial.