More Open, Scriptable NSPlugins

RELEASE: Mozilla Foundation Announces More Open, Scriptable Plugins Adobe, Apple, Macromedia, Opera and Sun Microsystems join in push to modernize plugins and create a richer web experience

This sounds like it would be a great step forward in terms of building rich clients in the browser. Looking at the raft of companies involved, I wonder how much of this is motivated by the industry’s fear of XAML based rich webapps taking over?