My thoughts are that this is great! I think i will be either fully or almost fully switching to Linux instead of Windows once they get Steam and the games to run well on Linux.
The main reason i've stayed on Windows platforms is the games... Other software either has a Linux version or an equivalent. There are many office software out there, such as OpenOffice etc.
And if the need be to use something Windows only, i can either leave windows as a side installation, or virtualize it if i need it so little that it's almost pointless to have a side installation.
I have began to slightly dabble into Linux via a virtualized Ubuntu...