Arrakis
<i>"Applications are becoming so complex that they are miniature operating systems in their own right and are hampered by the existing OS protection model"</i><p>Sure, that's true for browsers, as they mention, and a few other degenerate cases (eg. virtualization software?) - but that's certainly not the case for the vast majority of applications I run (text editor, terminal, mail client, IM client, etc.). How does this argument hold?