I'm sorry, I didn't realize that when I said "all" I should clarify that I meant "all platforms that provide a similar level of services, including subscriptions on behalf of third parties for which payment is made centrally."
RockeyMoney is great, but not only is it irrelevant in the extreme to the original comment at the root of this thread, it's very much an apples-to-guavas comparison with the Google/Apple/Epic/Valve/etc model of operation.
I can certainly see where you're coming from - but I don't think that subscription management necessarily needs to be in the ___domain of payment processors and products that allow third party subscription management are pretty appealing to me. At the moment they obviously can't manage subscriptions made through the iStore simply because there is a walled garden keeping them out - but I'd prefer a universe where those subscriptions could be managed by third parties (so that I could manage all my subscriptions through a single client) to one where each walled garden delivered a slick by completely separate and incompatible (by design) tool to manage subscriptions within their system.
Apple has one of the best subscription management tools as a seller platform (though I do personally think Steam's is better - but that's just preference)... but a better subscription management system would be providing an interoperable system that third parties could interact with and help control.
We're only really talking Apples-to-Guavas because these systems are configured to defend themselves from any cooperation.
RockeyMoney is great, but not only is it irrelevant in the extreme to the original comment at the root of this thread, it's very much an apples-to-guavas comparison with the Google/Apple/Epic/Valve/etc model of operation.