You’re suggesting that the App Store impose more rules on developers in this day and age when the App Store is deemed onerous, restrictive, rent-seeking, etc. The other side of this argument is that developers will always find ways to make money — they need to pay bills. As long as they are following the rules of the platform — use IAP, don’t abuse user data, etc. — the App Store should allow the app on the store regardless of the future subscription cost. Whether it is affordable or not is an individual subscriber’s decision, not that of the App Store. So, should Target not carry items at a price point higher than a threshold that it sets arbitrarily?

If users don’t want to pay a subscription for a service that they don’t think is going to add value — not for you or me to determine the value an app has for its legion of users just because it is not of value to us — they shouldn’t download the app or pay for it. Maybe users can use the day counting app to count down days until when their free subscription ends, then unsubscribe. Apple has made it super simple to unsubscribe to a subscription purchased through the App Store. If users don’t use said feature, that’s on them; it’s not the responsibility of the App Store.

Let’s take responsibility for our actions & subscriptions.