Everything is improving I guess but there is very little relative investment in razors. They look different but arguably function worse than the original style

Everything is improving I guess but there is very little relative investment in razors. They look different but arguably function worse than the original style double edge. Vacuum cleaners have had a bit of innovation but no one is really desperate for a better vacuum cleaner unlike software. Also many of these hardware items have basically reached close to their peak form. You can't really make a radically better bicycle because we have already reached almost the best design. With a team and a few years you can usually obliterate the leading software product in most areas and with a large team you could completely revolutionize it since there is so much easy target improvements to be had.