People moving slower will save money. Margins (even assuming the margin is a profit and not a loss) on launch consoles are poor, the more people who buy early on the more manufacturer's lose.
Yes and no in that the early adopters are usually the big spenders in that they will mostly all get plus and buy two or more games.
I predict that The last of us 2, Death Stranding and Ghosts Of Tsushima will be part of the marketing push for PS5 in that they will run native 4k locked 60fps