You realize what a thought experiment is, right? That's what the entire slide is for. They're pontificating on possible issues and running through a list of solutions. The last section of the 2nd slide gives you their answer to the perceived threats. "Premium sales model is the central approach".
The 'Leapfrog' part is already partially answered; they're doing mobile-centric partnerships and there's a revamped PS+ for PC (and other devices). None of that means the Day 1 PC ports of traditional 1P games you've been salivating over, though.
Also these slides were written by a person within SIE (I guess from the Insomniac studio) presenting their thoughts to other members of SIE and Sony; this is NOT something written by the CEO or BoD of SIE or Sony, so its existence doesn't confirm their agreement with what's presented. Additionally everything in these slides centered on the idea of COD leaving PS platforms in 2027...which is no longer the case.
So essentially, everything in them is based on an outdated scenario that never came to pass. You played yourself.