"While I don't think he is really against Linux adoption, I do think he went trough a little to much effort to make his statement. I think according to his conclusions I'll have to clarify some points in response.
"Lower TCO
"1. "Here the author makes and disproves his own argument; Linux does not deliver a lower TCO than Microsoft Windows server if the administrative costs are admittedly higher."
"This is not what I stated, the overall cost of administration is lower, because less people do more work. This more than fully compensates for the increased cost per administrator. Doesn't it give an indication if something is more expensive by the way? It has more value, because it is more efficient. So in my opinion this argument still stands."