The end of software as we know it

Adobe is bucking the market yet again, this time with its 'Air' on-line software applications. According to this BBC on-line article, the apps will run on Macs, PCs, and eventually Linux machines, and even allow users to work on their files off-line.
Sounds like the deathknell for Microsoft, and that brings a tear to Rico's eyes... (Air running on a Mac Air would do just fine, thank you.)