Yeah, they're dated reports, but still, Microsoft has not changed their product/strategy that much between WP7 and WP8. The fact that you can't upgrade a WP7 phone to WP8 doesn't mean WP as a whole shouldn't be considered a single platform.
I wonder what made those analysts think WP would get that popular.
I think they under estimated how fast Android grew and MS's influence on handset makers. I think they expect MS have stronger leverage from the PC dominance on both consumers and manufacturers.
Windows Phone is growing like iOS used to. Soon, android and windows will dominate, and iOS will be a niche player, much like OSX...
Just my $0.02.
I can't see it... if the first 50% of the market has smartphones and it's mostly Android/iOS ... the next 50% will likely be in the mid/lower end segments.
I don't see evidence of a rush of mid/lower end handset makers adopting Windows phones.
I do see stronger Android/iOS ecosystems (and greater entrenchment in their services) in upcoming years.
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