Ok, how about the google photos archive from the hotel next door with 1000s of pictures of passports taken on the shared unlocked $100 android phone that sits on the front desk? Not millions I grant you, but again, there doesn't seem to be an issue with active exploitation of these.
There is an issue with active exploitation of passports, of course the scale can change. Due to banking KYC / other KYC laws there's a market for these copied identities and of course so criminals don't even get a speedbump by KYC whereas the boot is used up the ass of the normal person trying to pass KYC when they're missing some stupid document like proof of address.