> where I love (SF). I don’t think this is true.

So... the most technically forward city in North America? I'm in Calgary, which is not a tech hub.

> Remember the Fire Phone? Amazon doesn’t always hit home runs, they have a ton of money so they can afford to fail fast and reinvest elsewhere.

And these companies start as the incumbents, which gives them time to at least copy and respond. Amazon had to steal every customer from them.