Most applications don’t have the same requirements as in a car though. A car battery has to be portable, as light as possible, survive frequent charging and discharging, charge relatively quickly, handle significant weather differences, be resistant to catching on fire, and I’m sure I’m missing some factors. Most other uses only need a subset of these, and also the scale is not as large as it would be if we electrified every car. (Ideally we move away from cars in general, but we should work on both of these.)