I think the avenue for this to get traction would be for Facebook to sneak it into people's online lives without them really consenting to it. For instance, so

I think the avenue for this to get traction would be for Facebook to sneak it into people's online lives without them really consenting to it. For instance, some type of activity starts giving you Libre as a reward, and you can use it to buy things on the site. Then certain essential things might start coming with a Libre price tag attached. Similar logic to how premium currencies in mobile games work.