As far as SONY is concerned, this is positive news. They get to advertise their 2020 lineup and toss in the remastered and complete editions of Spiderman, TLOU2, FF7r, Nioh 1+2, Ghost and Dreams and pretend they're part of their PS5 library. I am sure Uncharted 4, Horizon, Bloodborne, and GoW are making their way to the PS5 sooner than later as well. Don't forget, SONY has a successful record of selling a few months-old PS3 game as an immensely successful PS4 title. They can do this again with the PS5 at much a larger scale because of the similar hardware architecture.
The people who like to pretend that the fireproof PS4 exclusive 2020 line up doesn't matter since we're flipping the page on what has been an embarrassment of a generation for MS, are the same people defending Phil's cross-gen strategy. Make up your minds.