Sony is testing the scalable platform idea with ps4 and ps4 pro . Depending on switch's popularity , ps5 generation may include a portable 400 dollar tablet hybrid with lower resolution target and a slightly higher specced home unit for 4k , 8k and tethered Vr purpose. Now sony might need to change the base architecture from x86 to arm for the scalability purpose. And as a platform not bound by a single hardware , sony can sell to both the portable and home markets with only supporting a single platform.