Just as a quick preview, assuming the PS6 has a 300 mm² APU just like the PS5 and it's manufactured on N3, that alone would add some $100 to the console's manufacturing costs if other all factors remain the same and TSMC doesn't cut their wafer prices in 4 years' time.
It's the same thing with the Switch 2, their Orin APU vs. the Switch's Tegra might be adding up to $100 to their manufacturing costs.