There is going to be a bit less of Maemo, MeeGo, Qt and Symbian.
Maemo and MeeGo will go to Intel, Qt will go to some other Finnish company, and Symbian will simply die.
Read more...Either way whether Windows Phone 7 will be successful or not, Nokia is in a bad situation.
Microsoft has enough money to shut down their mobile platform and create actually good working apps for other platforms (Exchange, Xbox Live Arcade, AD/LDAP support, etc.) instead. Then Nokia would have to pick up their unmaintained MeeGo platform again, which will be a bad idea, because it's not likely Intel will do much with that platform. Or become yet another Android using manufacturer.
If
WP7 somehow becomes successful, then HTC, LG and Samsung will begin creating a lot of phones for that platform too. Seeing as Nokia is already lagging behind those companies in terms of good hardware, their investment in
WP7 will become unbalanced.
From being the mobile phone that you had to have in the 90's in order to belong to the cool kids clique, to the bureaucratic mess today. It's a pretty sad story.