It's probably cheaper and simpler to modify (say you suddenly want it to turn on when you click 3 times) to use a 0.1€ chip than to figure out how to do it and build it with discrete components.

20 years ago I was all "computer (chips) can do everything! We can use them everywhere! Replaceable, reprogrammable, fantastic!"

And no one cared.

Now they are everywhere and it's just a fucking mess 😔

Maybe 20 years from now the EU will have forced standards onto everything and you can (again) fix your dishwasher (and start it from work!!1!).