I'd assume like last gen, each vendor would have their own exclusive customizations. And from this article, I'd guess Sony require more customizations than MS. Pretty sure it's been stated that the Pro has more customizations than the X, MS went more brute force.Where are you getting "exclusivity" from? The Forbes article does not mention exclusivity.
2019 was completely omitted from the same financial report, so 2020 is not guaranteed.But don't Sony's financials indicate losses coming in late 2020/early 2021? Would indicate to me that they will launch ps5 at a loss per unit in 2020 and not 2019.
Yet Sony did release TLOU in 2013 after PS4 was announced for later that year.I think 2020 is the way to go,since Sony's last batch of exclusive heavy hitters are of 2019 schedule.They wouldn't release Death Stranding,Ghost of Tsushima and Last of Us 2 in between gens.
And we're expecting BC and PS5 enhancements, changing the situation somewhat.