I don't know what Android's fate will be, but WinMo 6.5 wasn't doomed by the hardware. The interface was awful and wasn't finger friendly.
You'd be surprised of how overrated the "finger friendly UI" factor really is, these days.
Besides, have you ever tried a WM6.5 device?
Most brands put their own UI on top of the OS anyways, very few people have actually seen the WM6.5's UI (which is
pretty good actually, heavily based on the Zune interface).
Take HTC, for example, they used the
exact same Sense UI for both their high-end Android and WM6.5 devices, and people still complained a lot more about WM6.5's UI while claiming that Android was great.
It was the same UI, for god's sake.
Samsung does the same with Touchwiz. Omnia 2 uses touchwiz, everyone says it's awful. Galaxy S uses Touchwiz,
OMG it's the best phone ever!!!
Claim about responsiveness, performance, development friendliness, available software and other stuff? Sure, fair enough, I'll be right there sharing the same opinion.
But protesting about the UI?
iOS' UI is just a bunch of shortcuts in a black background. No live tiles (which the piss-poor symbian^1 handsets have had for a while), no live background, no "main screen" where you can configure shortcuts for favorite contacts with photos, no weather tiles, nothing. Just shortcuts. And a black background.
And before the 4th version (where they
invented.. #gasp# folders!!) there wasn't even a way to group those shortcuts, or even label the page were in.
And yet, it's still considered the "best UI" by many reviewers.
Take all the sand from your eyes and make no mistake: "
UI" is the new snake oil for measuring smartphones. Like PMP watt were for PC speaker sets a decade ago, weird contrast measurements were for LCD TVs and RAM amount is for low-end graphics cards.
So no, it wasn't the user interface that killed WM6.5. I can guarantee you that.