My guess is they aren't trying to fix prices or even increase them deliberately, but to clear out a lot of old parts from their back catalogs. A lot of these parts aren't coming back at all IMHO. Not in 2027, not in 2037, not ever.
You don't post 5-year lead times if you expect to sell any parts at any price, whether high or low. Frankly, they are probably trying to figure out how to sell their old fabs off. There will never be a better time for them to do that. "Never let a good crisis go to waste," as the politicians say.