Well there it is, like I said when the E3 cancellation hit, the only reason Sony would do that, is because they don't have any substantial announcements to make, we already know most of the big guns and PS5 isn't releasing in 2019.
Let's be honest here, the moaning about Sony E3 2019 would've been monumental: "OMG they wheeled out their big guns for the umpteenth time, how often will they show them off at E3? Why don't you just release them already?" "Where are the new games??? This sucks, Sony is doomed and arrogant!"
Yes, they could've only skipped the presser and build some booths, guess they don't think it would've been worth it.
If they skip E3 2020 though, then they really are over it for good, which would suck, I loved those press conferences, even at 3 in the morning.