.NET bleh. HTML5 is the future, cross platform. JavaScript will be made into a robust language in the coming years, with classes, etc.

The crappy DOM will probably change for the better, HTML5 apps will run as local apps and tap into the native APIs of the system.

Client = HTML5 + JS , yes we dont need .NET here, where .NET/C/C# and others will be used, will be in the backend, frontend/client can be perfectly made with HTML5 + JS.

The only exception is perhaps games and apps such as Photoshop, but 90% of enterprise stuff that is simply thin clients speaking to a big backend database+etc can be perfectly made with HTML5.

HTML5 is here to stay, .NET will be the exception. (Games/Heavy backend/3D apps/Photoshop) sort of things... nothing more.

Or who knows, maybe in the future with WebGL and what not even some more complicated games can be made just with HTML5.