It does seem like they are deliberately trying to kill the Desktop PC.
A conspiracy theorist might say that the Corporations and Governments, have got tired of the peasants not following orders.
The "conspiracy" against the Desktop is no conspiracy at all, as it was publically announced in the mid-90's that YES, Microsoft AND the OEM's all want the Desktop dead as a multifunctional versatile platform, and there were even interviews with them in the papers, where they outlined their vision for the future of the electronic world.
-Consoles or disc players for home entertainment. Games, movies, music - all go there. You have a TV for that.
-Laptops remain as a solution for mobile users for OFFICE work, not games, not anything else.
-Desktops, well, they will stay at the top of your desk and will be used for office work exclusively.
This is how the vision for the future was outlined publicly, and not secretly. It was told in plain, simple words, but no one paid any attention to it, because, you know, it was the Era of the Desktop, with Moore's Law doubling CPU power as predicted and the public dismissed those things as stupid.
We are almost 2013 now. Let's see how things have developed over this almost 20-yr period since the announcement was made.
-Smart TV's allow you to browse Facebook, Twitter, Youtube and a few more approved and selected sites.
-Smart TV's let you do your movie streaming directly from the Internet onto the TV.
-Consoles also serve as Disc players and make the TV with its 7.1 Surround Sound the center of home entertainment for everything.
-Desktops no longer double their processing power, get insane amounts of crippling DRM, and a tablet OS with costly codecs.
-Desktop games no longer get dramatic improvements to their gfx, playstyle or whatever, thanks to the DRM thing.
-Desktop advancements have basically come to almost a halt in terms of entertainment, while consoles keep catching up.
Plot against the Desktop ? Yes. Conspiracy ? Hardly, as it was actually announced, but no one took it seriously at the time.