I wonder when you people will stop thinking with your marketing/growhacking/SEO/spam brain and start being on the user side. If you want low value visitors just go and buy ad clicks, thanks!
Websites are not randomly asking for mic or camera because that would be creepy and visitors would just run away.
I am not lecturing, I am giving my feedback on the matter, like everyone else here. If your product is good, users will save your site in their home, don’t worry about that.