Earlier quoted context omitted.
I won't move without a solid offer first. (and not for 50k). I have things to take care here, and if I ever move, I need to be stable enough and have money enough to return here sometimes to see how things are going. I cannot just go adventuring and move without a chance of getting a job first.
You can see a bit of the chicken-and-egg problem here. You're not willing to move without an offer. Yet your chances of getting an offer are dramatically multiplied if you do move to the Bay Area, even if only for a few months. Telecommuting has a bit of a bad rap at many companies.
A flight ticket to San Francisco alone costs me about 1 month's salary, and that's before considering living expenses and the painful 3x currency conversion rate. Visa applications aren't cheap, and is a major pain in the ass to apply for.
In other words, I can understand why speeder won't simply up and shift to SF. Simply put, I cannot afford to go the US without a solid job offer.