Marco Arment:

One of the biggest draws to the Android platform, the “open” Android Market, has just been sidestepped and made largely irrelevant for tablets. If the Fire sells anywhere near its target volumes, Amazon has hijacked the Android app retail channel for the long term: most sales of Android tablet software will be through the Amazon Appstore, and if your app isn’t there, it’s effectively invisible to the Android tablet userbase.

How long will it be before this effect spreads to the much larger Android-phone market? All it would take is a deal between Amazon and one of the big handset manufacturers to preload the Amazon Appstore, placed more prominently than Google’s Android Market, on all of their phones for a little while. Amazon knows how to play the retail game — it’s their business, and they’re incredibly good at it.

Yup. Yup. Yup.