Absolutely, piracy forums have guides to fake being a student to get an unlimited account, then mirror huge (1TB+) gdrives full of pirated content to your own. This was (is?) happening on a huge scale.
My kid's circles of friends consider email to be like snail mail/phone calls- nothing but spam.
I warned them about g-products for years while they were growing up, but I needn't have worried- they see g/fb/insta/snap et al for the garbage it is.
Most of them use telegram or whatsap for communication.
Kids im speaking of are 15/17 (both girls). My youngest(boy) at 12 is more worried about football.
They use plex or whatever for sharing. They schooled me hard.
For a long time they dealt with the free accounts, so in a way they have already a lot of protections in place, and if they wanted they could keep the existing free accounts and just not accept further signups for this account type.
everyone handrolls prevention measures, i once proposed an industry council where we swap tips, but everyone views it as competitive advantage for some reason so it didnt go anywhere.
They may or may not fully utilize the bandwidth, but they will absolutely take advantage of access to resources that don't require real identification, and that adds an extra burden of regulatory compliance on the company offering it (even if it is just hiring a few extra people to manage takedown orders, etc).