[altmanaltman]

2 and 3 are great but 1 will not work great if you're a consultant, unless the 1 thing is broad enough to have actual demand that you can tap into. Finding that 1 thing is also extremely challenging, esp. if you're trying to make it the main revenue play. I can be the world's leading expert on Brainfuck, but that doesn't mean I'll get my bills paid. It's much better to be the "I can call this guy to figure out whatever I need to figure out" person than "this guy only does X well, I'm not sure if i need that, might have to hire the general guy to figure this out first" guy.