I agree, but I bet we begin seeing other car companies using large displays and suddenly display manufacturers will start selling properly-designed, large displays.
In this case, Tesla simply wanted to be ahead of the curve. Worked for a while, then the known failure rate of the parts caught up.
Whether or not it was worth it depends on the strategic intent and whether or not that bet paid off. We'd really need more information to make that call. And Tesla is not going to give anyone on this thread access to the strategic and financial information necessary.
But yeah, with or without Tesla, obviously the screens would have existed.