A great analogy. Apple have done all the work building the city—maintaining the water and power, keeping the roads repaired, building ample car parking and side

A great analogy. Apple have done all the work building the city—maintaining the water and power, keeping the roads repaired, building ample car parking and sidewalks, keeping out the criminals, watering the plants, ensuring that none of the vendors are scammers, and generally making the city a really nice place. They even provide all the construction equipment for anyone who wants to build their store. Then they spent a lot of money marketing this city and over time have built a strong reputation for the city as a great place to be, the result being the city is full of customers. Not only that, they're renting store space to the vendors for free, in exchange for a flat and non-discriminatory sales tax. Seems fair. Despite all that convenience, Spotify still doesn't have to sell you their service from within stores in Apple City. They could have put a store just outside the city limits in the wild, wild west (aka the WWW). In return for making it slightly more inconvenient for their customers, they wouldn't have to pay the city's sales taxes, even when their customers enjoy the product inside Apple City. But if Spotify want to sell within Apple City, they benefit from the immense conveniences that Apple have put in place, from the marketing and reputation that Apple has cultivated. And it's not like Apple deceived anyone—the 30% sales tax was never concealed.