Somehow Windows has always been and is still crap at managing archives. Ultra-slow, has trouble opening or extracting individual files inside the archive, etc.
However, 7-zip has been doing all that perfectly forever now. Not sure why anyone would use WinRAR, paid for or not.
There only needs to be a couple people knowing how to get a rip for it to end up everywhere.
If physical releases start disappearing everywhere, I can see piracy getting a significant boost. It will be the only way to "own" a movie and be sure you can still watch it whenever you want. Disney has been removing content from its service already, even some recent stuff.
I know Gabe Newell's old quote is being parroted a lot but it's relevant : "Piracy is not a pricing issue, it's a service issue". Steam may be a digital market, but it doesn't require a continued paid subscription to access stuff you've paid for, and it doesn't delist games whenever it feels like it.