Barriers are things that prevent you from doing stuff. To start a bank, you need billions, a reputation and friends in the industry and central bank approval. E

Barriers are things that prevent you from doing stuff. To start a bank, you need billions, a reputation and friends in the industry and central bank approval. Even a whip smart billionaire would struggle. Getting into the app store requires £1k of hardware, enough programming chops to learn a new language and the sort of bureaucratic hurdles you might encounter signing up to a cable tv contract. If you don't have the chops you can hire them. Apple do control the whole system via a tight bottleneck, but barriers aren't high. The web is lower still, but that's about the lowest barrier to entry for anything.