Say a magazine company wants to regularly send issues to a customer, and the customer signs up. Who has the subscription, the customer, or the magazine company? Which one subscribes?

According to Rx, it's the magazine company. Which one subscribes? The magazine company subscribes. It took me a while to realize this when trying to learn Rx concepts, which made it really confusing, since I've always seen the customer as being the subscriber, subscribing and owning the subscription.

It looks like Elm is the other way around compared to Rx, I think.