That part was luck. These two companies both got me through their interview process at the same time, and they both gave me about a week to respond as well.
I'm also in a unique situation- I think I am actually sort of hard to replace, as I live/work in a smaller Midwest city. My manager has no interest in hiring a remote developer, and we've been struggling to hire people for the past year or so.
I don't think I'd try this at every company or in every city.