Yes, no, maybe, depends. Might/could.
Under normal status quo conditions, more than likely not, as stated by everyone above.
But if you bought a late model, used rear wheel drive, or new, old proven technology, durable GM van, there's a better than even chance that you could keep that going for 20+ yrs due to the length of its production run, popularity with commercial fleets, lots of new and used, interchangeable and affordable parts, many interchangeable with pickups, etc...
Have seen online people reportedly buying new ones in the $25k price range discounted. The GM commercial van is still the top seller in the commercial market. Lots out there means parts for years to come, new and used, third party jobber, reasonably priced.
Same could be said for pickups utilizing a slide in or trailer.
With the internet, there will be info about hacks available to keep things running. There are now, if you check the import, sports and niche vehicles forums. This will continue out of necessity. Plus scavenging from donor scraped cars. Of course, you will need to educate yourself and be handy, always required to keep a car running on the road, long term, economically.
The comment about the vehicle will not be worth repairing is true, if you have to pay professional repair costs and it's not rusted out. Move to a rust free, dry climate
.
If you can do most of the work yourself, keep your mileage down, get reasonable cost parts, utilize mobile mechanics for heavy duty jobs, might/ should be able to keep running/maintenance costs way below new car costs/financing/insurance costs. The average new vehicle price is now over $34k. And in a couple decades, what will they be with inflation and dollar valuations?
I think 20-30+ yrs from a recent GM van might/ should be possible.
Too much infrastructure investment for gas to disappear too quickly and be replaced by electric which doesn't have the infastructure to support millions of vehicles. The hydro grid is old and can barely keep up with current demand.
Here's another option. Don't blow your stack on one new vehicle. Instead buy a good used recent van for $10k, the old style rear wheel drive from GM or Ford and invest the balance.
Should be able to run that with proper maintenance and replacement/scavenged parts for ten to twenty plus years, if you keep the mileage down. Then take your invested nest egg and update again to something that hopefully will last another 20 yrs. Keep your initial investment as cheap as possible to stay financially nimble, keep your options open. As we all know, a vehicle is a pure financial loss. Keep it minimal is smart.
The Promaster is running the Pentastar engine. Making tons of them for many vehicles and it is well regarded. That is it's only known saving grace for longevity, and that it's being installed in the popular Jeep. Should be lots of parts for future requirements. The transmissions are the issue there, I think, and from what has been reported. Specialized to repair and parts not impossible but not readily available nor cheap and over the counter. Again, scavenged could still make it feasible. The electronics are the big unknown here in terms of long term durability. Bigger risk when compared to the tried and true, proven GM old mechanical technology Vans. But you pay a premium in mpg for that reliability. They have electronics as well but proven probably the most reliable of all.
Everything has it's compromises.
Pick what seems to make the most sense to you and your situation. Do your own research.
Couple thoughts to consider for your benefit.
