In the case of simple appliances like the printer, there is just no actual need to innovate. It's like saying the hammer is an imperfect tool for hitting nails. There is nothing about the hammer that requires innovation because its intended purpose is extremely well defined and exceedingly simple. The same is true for printers, at least for generic home use. Your kid needs to print out their research paper before they turn it into their teacher tomorrow, there is no point between hitting the Print icon in MS Word and the paper exiting the machine with content on it that needs streamlining anymore.
However, if you're thinking I missed the point, that it's sometimes better to just... not innovate, you're mistaken. I agree with it, but there are absolutely areas where the intended purpose is not well defined or simplistic. Innovation is needed, it just takes experience to know where and when to innovate.