There's never going to be millions though. Lets see how combative they are against scalpers, bots and hoarders they are - there will be little excuse as they could see all the rookie mistakes nvidia made before pretending they were just popular..
There was an 'anti scalping measures' sheet from AMD that was leaked a while back. Requiring CAPTCHAs, etc.
Some of the retailers are implementing some measures for the 3080 as we speak too. The FE distributor in the UK uses a different URL for every drop, so people can't set up bots on the page ahead of time