I'm just speaking from the user experience: I know that there are issues with the App Store's model for upgrades, trials, etc. so those are valid considerations but if you're just using an app it is really convenient to that you can buy something securely with a tap and a double-click and have zero problems getting a refund or canceling a subscription.
Basically I'd expect successful competitors with Apple to be companies which do the same. Abusive companies aren't going to be popular but I suspect Stripe, Shopify, Amazon, etc. could convince a fair number of people that they're no worse on that regard and better in some other way.
Yeah, I would be perfectly willing to set up subscriptions through Stripe if they gave me a way to manage all those subscriptions in one place.
My worry with the "anti-steering" requirement being removed is that every company will redirect me back to their own website with their own payment system, and I'll have to manage all of them individually, or phone up their call center to try and get anything cancelled.
Easy to avoid by not subscribing to anything, but every app seems to be trending that way.
Basically I'd expect successful competitors with Apple to be companies which do the same. Abusive companies aren't going to be popular but I suspect Stripe, Shopify, Amazon, etc. could convince a fair number of people that they're no worse on that regard and better in some other way.