It's great when companies find someone who solves their exact problem, it sucks when you're the guy who can only solve one problem though.

Especially when someone finds a way to automate a solution.

I think Valve described the 'T' employee: know one area very deeply and a broad range of others reasonably well. Seems to be a good approach :)

Maybe another way of looking at what your friend said is to just be specific about your skills/experience when job seeking?