Well, you probably would pay the house builder for the poster you nail in your wall if the house builder stored and delivered the poster that was built with too

Well, you probably would pay the house builder for the poster you nail in your wall if the house builder stored and delivered the poster that was built with tools the house builder provided. Your analogy does not apply. For your second point, apps vary in value and I'm sure that there are times when Apple pays somebody to put an app on their store.