Ask HN: Why has physical button technology stagnated?
Is cheap plastic and largely unsatisfying button pushing the best that can be done?
Yes, plastic buttons are the most popular because they are cheap and easy to make. But it's really up to the product manufacturer to decide what to use. I'm sure the buttons in a Boeing/Airbus are much more solid, resilient, tactile... than say the one off your $10 drug store toy.
Monitor buttons are pretty cheap as well - I know margins are an issue universally but interaction with your physical product seems important