In much the same way as "American World Series Football" only really means American Football, and not even including South America, not Canada. Gosh, how quickly the affected pool shrinks. Suddenly we begin to see that it only refers to a very small minority in global markets.
The crucial word in "strong, negative value to the entire IT security industry" is 'security' because almost no-one bothers to produce anti-virus for linux.
Windows creates a market for security, an attempt to "shut the door after the horse has bolted", an industry that can only ever really try to play catch-up and depends on occasional spectacular failures in order to convince people to buy-in to it's inevitably doomed products.
Linux is preemptive and pro-active. So, if you want to pay constant serious concern to security then buy-into Windows but if y9ou would rather just not have malware issues then 'buy'-into linux. A simple choice.
Regards from
Tom
