The GPU costs don’t have anything to do with it. Consoles used to get cheaper as a result of they used to launch on older mature course of nodes. Then do die shrinks to the smaller nodes after they grew to become cheaper and mature. The smaller chips have been cheaper to fabricate and have been extra environment friendly and wanted much less cooling. They handed the financial savings on to the shoppers.
This time round each the Xbox and Ps launched on a comparatively mature 7nm course of. Downside is, to get die shrinks goes to be very costly. Not solely that however the advantages from going smaller aren’t any the place close to as massive going from 7nm to five nm. In comparison with the die shrinks within the PS360 period of 90nm to 45nm.
5nm may be very new and really costly, 3nm much more so. These consoles are usually not shifting to these course of nodes. In the event that they do, the worth is more likely to enhance relatively than lower.
They’re going to keep on 7nm till this era is over. If they will let 7nm mature even additional they MAY decrease the worth a bit since they may have much less failures and will not should throw out as many chips as they do now.
TLDR. The rationale console costs aren’t going to go down this gen is due to the method nodes they’re manufactured on. There’s no cheaper nodes to shrink to to save cash on silicon.