Then AMD should have NOT segmented Vega in desktop, at least not as much as making a Vega 6 SKU, simple as that. Leave the IGP defect dies for mobile and dont try to pass a SKU that performs slower than the one it is replacing at the same price, after all APU in desktop is a small market RIGHT?
Prices and segmentation are bussiness decisions, and cost is just one part of the product pricing. AMD is only able to get away with this due to having the APU monopoly.
What if the Vega 6 sku requires to much voltage to be in the mobile markets offerings? They should just throw them away and eat the loss?