Yes. The problem does exist. That's why the OP poses the question. Do you happen to have a bottle jack shop press or a long ram on an engine lift. I get tired of pumping the handle. OP asked specifically about a floor jack. Us old people get tired of pumping a floor jack too. If you are young and strong, just wait 20-40 years; then you will understand better. It has already been solved by air/hydraulic, but why not battery powered?
Well, I'm 62, and I guess I'm either fortunate or maybe still young enough, because I haven't encountered a situation yet a good floor jack couldn't easily handle.
Concerning the issue of why there isn't a battery/hydraulic jack for easier lifting, maybe because it doesn't offer much of an advantage over air or corded electric that's already
"solved" the problem? A floor jack is big and heavy, and usually only used in a garage where air and/or electric are available, so why the need for battery power? There's also the issue of what battery platform to use (a new proprietary one?), but also the problem of how batteries drain and stop working - would **** mid lift, and possibly a liability issue?
Sorry if some see me as a complaining negative Nellie, but I just don't get it. Ultimately, the market says it's not viable, practical, and/or profitable, but could be a great opportunity for enterprising entrepreneurs, so maybe someone should take a shot and patent a design?