It most certainly is a concern for Google (forgive me, I don't understand what pervue means -- so I assume the context). The Android Market and Google services are a major source of revenue for Android, and creating new app stores is competition plain and simple. It is within Google's best interest to maximize its market reach and have developers develop in way that can be released painlessly in the app market.

But Tegra-Zone or PS Suite are different than just another app store . Most app stores simply requires the developer to publish the APK to the alternate market. Nvidia and Sony seem particularly keen to confine apps to their markets specifically by targeting branded hardware and tightly holding developers with a suite of development tools. This can effectively exclude a game from being published in a working form anywhere other than the designated store.

One of the talks at Google IO is 'Agressively Compatible Android Games' which show's Google's resolve to educate developers to reach the largest market and keep the market from fragmenting, especially since these incompatibilities are purely synthetic and not driven by hardware. I expect Google to continue to fight for its App Market, and to try to convince the general developer why the larger market is worth targeting.

As such, expect new breakthrough ideas, faster implementations of Dalvik, perhaps even a NaCL implementation for Android.