These are called "freeloaders"
These people are not paying it forward Pay it forward
There are No excuses for not having an active subscription
Their user chip should be greyed out or have some kind of destructive or warning color so they can be socially shamed
Show list of pages by freeloaders so people can donate to them
A section in the Discovery page called "Donate to freeloaders so they can afford to pay for a subcription"