To answer your first two questions, it would take many years. But unless you're privy to insider information from a lot of different companies, you can't rule

To answer your first two questions, it would take many years. But unless you're privy to insider information from a lot of different companies, you can't rule out that all those devices are several years into their development already. I would be shocked if there aren't at least a couple Android tablets that have been under development for more than a year. As for your third question (how long to line up the content providers): not very long at all. Once Apple has paved the way, it is much easier to get those same media companies to give the same deal to a competing device, since those media companies don't like Apple having that much control over their content i the first place.