Actually, gas forges have their own backup options too. A simple propane tank setup doesn't need the grid at all. Both tools just have different strengths for different situations.
Oh totally! My grandpa's old drill press runs on a sketchy gas generator he rigged up himself, thing must be forty years old. Makes a horrible noise but it still drills straight through anything you put under it. Kind of amazing what just keeps working if you don't overcomplicate it. Found it buried in his barn last summer and it fired right up.