The way Sony has been talking lately about their cloud service and turning their whole gaming library into a streaming service, there may not be a PS5! It may just be a service that you pay for and can play on a number of different systems or set top box like systems.
Boy this is a real toss up going fwd as both companies seem dead set on vloud based gaming but then how do you actually eliminate physical game discs? PS5 would prob be it but with more cloud based gaming & not so much discs. & the notion we're gonna wait another 6-8yrs is absurd in my book. Both companies have made statements making it seem like 5yrs is the max for life of service. But who knows right as the PS4 & XBuno hasn't hit shelves yet.