High end mice still don't come in plain-bluetooth version. I've a couple of Logitech Performance MX and there's still no succesor (either from Logitech or an alternative from another company) that's just plain bluetooth with no dongle.
> [...] wireless mice are so common now)
I never made any mention of a non-wireless mouse. All highend mice come with USB dongles, regrettably.
Even now, this is sort of like saying 'Forget about watching a movie on these laptops' about it since it doesn't have a DVD drive! (I was going to say 'in a little while', but really, wireless mice are so common now)