Amazing you feel that EVs are somehow more maintenance than ICEs. There exist EVs that have never had any manufacturer/dealer input since the day they rolled off the lot.
Tesla/Nio are a bad examples - many EVs were built to be sold and essentially ignored by the manufacturer.
After that EV company goes out of business, how are you going to replace that bespoke {$random_part} that broke? Any Fisker Ocean owners want to chime in?[0]
Do the big companies really have a commitment to parts delivery anymore, or are they following the same trend? Took my friend 9 months to get a part for his C8 Corvette when it got rear ended at 5mph. Tons of other GM owners have been waiting months to nearly a year for many common parts for repairs. Selling parts doesn't make these companies money, so why should they care? As long as they're making enough to sell the new cars first.