Plenty of cars get marked down by 5k+, but you seem to think that even if you can get a new car for 5k under sticker that MSRP will magically keep used values high. Not how it works.
As to car manufacturers reducing MSRP, show me the other car manufacturers that are doing direct to consumer sales so we can compare apples and apples. Oh wait, the only ones that exist are small EV companies with no scale.
Ignoring all of that, MSRPs do get reduced.
Last summer, Chevrolet significantly lowered prices for the 2023 Bolt and Bolt EUV, cutting about $6,000 per model. But the price increased in January 2023, with the Bolt EV now starting at $27,495—still undercutting the Nissan Leaf by $545. This brings the starting price to $26,595 and $28,195, respectively. (Even with the increase, that’s $10,000 less than the Bolt from 2017.)
Previously, the Hyundai Kona Electric saw its base price lower from $37,390 to $34,000 for the 2022 model year, as newer Hyundai/Kia EVs charged into dealerships. The Nissan Leaf dropped from $31,670 to $27,400 for 2022, and it streamlined from five trims to two, the S and SV Plus, for 2023.