I've been on AT&T's internet for several decades (going back to ISDN), and although my current fiber internet service shows no device rental fee, for many years

I've been on AT&T's internet for several decades (going back to ISDN), and although my current fiber internet service shows no device rental fee, for many years before that, I had a monthly "Internet Equipment Fee" of $7. This was for the 2Wire 3801HGV router (the AT&T specific model).