both sony and MS view on corssplay change lately in this gen due the huge different on console sale, but i think it will be open up again by the end of this gen or the begin of next gen to convert ppl from old console to new console as quick as possible, as backward play being a main focus now

as someone play on both PS4 and laptop, i'm very welcome for crossplay, so i can keep my progress on different system in same time, play at home on my PS and play on traveling with my laptop, i can't never get into handheld system or mobile game but have to traveling alot this feature is something i'm looking for