>>28450260 (OP)they generally use "automotive grade" components, meaning they will(should) last longer than a screen on a laptop.
but yes, its a concern for sure, especially for fancy cars that use custom screens with weird shapes/resolutions/curves and integrated mutliscreen glass panels.
on the flipside tho, many/most cars use pretty basic screens that are very easy to replace, even if the og part is nla. eg tesla's have regular ass flat 15/17 inch touchscreens. automotive grade probably, but fundamentally its nothing special, basically existing laptop panels with stronger glass and maybe some uv coating. at any point in the future, you could probably replace them with any available panel of equal size/res if you're willing and capable to figure out the connections and do the soldering.
but really, the most pertinent question is, will anyone give a shit?
m539 on youtube has done some a couple episodes refurbishing the instrument clusters on old bimmers. on one occasion, also the screen of the infotainment. he could do that because people loved and cared enough about those cars to do the work. and there are enough of them that its economically viable to offer kits and custom replacement parts for them long after the mfg stopped making them.
but for modern cars? those soulless pieces of shit? aside from the occasional rarities, porsche gt3s or similar, who the fuck cares? people love the old bmw 850, but i doubt anyone cares about the modern 8 series. people love the mk4 r32 gold, but do you really think anyone will give a shit about the mk8 golf R in 30 years?
and if nobody cares, nobody will bother to work out how this stuff works, what to replace NLA parts with, how to connect them, etc etc.