1: Waltmart is just us, amazon is global (try to think about that the world is bigger then just the us please)
2: Livestreaming - Twitch, with you're arguments google is not a monopoly (there are other search-engines) and no, livestreaming to millions is not something 1000 other apps can do...know why...datacenters
3: Audible probably 90% market-share
4: Ebooks of course they are the biggest seller of ebooks in combination with kindle's
5: Yes there are other's but the only competitor is Azure and google..that's maybe the only point where you are right
2: Livestreaming - Twitch, with you're arguments google is not a monopoly (there are other search-engines) and no, livestreaming to millions is not something 1000 other apps can do...know why...datacenters
3: Audible probably 90% market-share
4: Ebooks of course they are the biggest seller of ebooks in combination with kindle's
5: Yes there are other's but the only competitor is Azure and google..that's maybe the only point where you are right