I believe it will be like ps3. selling low amounts every week, but constant, after the PS5 is already solid in its life. Because maybe 6 months after PS5 launch, ps4 will sell like hot bread, since the prices will drop, making it affordable for people who wanted to have it, and didnt have the money for it before.
For the second question, I dont use MP side of games, so I dont care that much, but for sure I would like some of the premium things for free, like saves on the cloud at least.

"We all make choices, but in the end, our choices make us" - Andrew Ryan, Bioshock.







