How will I know when Linux is "ready for the real world"?
I get my living from working with Linux & F/OSS at a Tier 1 Global Company. It's committed to Linux and uses it extensively in internal projects and as a platform for its products. No, it's not IBM, Dell, Google, Yahoo or Oracle - all of which would apply for the above. The company I work for, like these, is an industry leader not only in its field but a significant player in global business.
Just because you don't see Linux & F/OSS in your own daily life it doesn't mean it's not there. It's also pretty funny to read how Linux vendors such as Novell, RedHat and Ubuntu are slammed on these forums as being non-viable businesses. I don't know any details but my guess is the company I work at is paying significant amounts to a Linux vendor.
Keep trolling, I'm just grateful for the time I spent on learning Linux - it puts the real world bread on my real world table.