Bell isnt a great example because telephone companies are a "natural" monopoly - it doesnt really make sense to have a dozens of phone lines connected to your h

Bell isnt a great example because telephone companies are a "natural" monopoly - it doesnt really make sense to have a dozens of phone lines connected to your house in order for there to be competition in the telephone service market. That's why when it was split up, it effectively was only split up into smaller regional monopolies that didnt really compete with each other. Smartphone applications aren't the same - but for a couple bits here, and a cryptographic signature there, any software could run on an iPhone.