Technology that seems Wiz-bang today gets out of date quickly. Anyone remember Windows 2000? Or Netscape, AOL? But I guess the whole goal for car companies is to sell the car that's on the lot today. If they can't find someone who finds value in it today, and buys it, then they'll basically go broke. They can't really worry about 10 or 15 years down the road.
These large LCD screens of today, who knows what will become of them when today's cars are 20 years old. Maybe someone will come up with a 5G -> 4G/3G emulator to extend their usable lifespan. Maybe even for your dodge ram ...if you wait a few yrs. I guess new cars that are 5G capable today (or soon) will at least be able to stay somewhat current for several more years since it's relatively new. But even 5G will go obsolete someday. And who really wants to keep paying for tech on your car after it's semi-obsolete? Like the old-school maps when yer phone basically has better navigation for essentially free (if you don't mind being tracked, etc). It's usually so cumbersome to use maps in vehicles, I never really saw the point. I can literally 'talk' where I want to go into my phone and boom, it brings it right up, hit 'go' and it walks ya/talks ya right there.
I'd rather just have a regular radio/stereo with a fluorescent display and real knobs (don't forget the cassette too!
). They'll work just fine after 20 years. But then again, I'm not the customer the new car manufacturer is targeting.