Amazon cleverly create their own Android AppStore.

This is a smart and interesting move. There's no reason you need to own the operating system to own the appstore. And Amazon as innovative online retailer with size and technical has a good profile to do this.

There will, of course, be a tension between Amazon the curator / publisher and Amazon the network-market enabler. Will they censor content they don't like? Would they exclude a wikileaks app?

It also raises the fascinating question (at least to me), if Android, why not Windows? Is any company bold enough or foolhardy to build an app-store and take the role of curator / gatekeeper of the Windows eco-system rather than wait for Microsoft to lumber up and do it badly in about three or four years?

Some people have kind of been in this game for a while : Tucows, Download etc.

Imagine what some visionary leadership and chutzpah could do with one of these companies at this moment.