That was a horrible article. Was pretty much pointless and in my opinion was based on a bad experience.
Comparing GIMP with Photoshop... Photoshop is a paid version GIMP comes pretty much bundle like MS Paint does. That was a very bad comparison.
You never compare Paid versions with Freebies. A Paid version is usually better for obvious reasons.
We all know if you install a DVD with MS on it, you get nothing; on Linux you can do something with one DVD.
The only part that I agree with some comments is about vendor support and that part is the biggest hurdle.
For example, we could use Linux at work but Dassault Systems only wrote CATIA V5 and ENOVIA to run natively on MS. To run in Linux you need an emulator and defeat the purpose. CATIA V6 does not even run on an emulator; so we are stuck with MS because of the business software.
However, the servers runs on IBM AIX Samba Servers. That is a win for the Penguin
