Printer ink is going in two directions, on one hand you have HP and their "ink as a service" and remote-disabling cartridges when you stop paying, on the other

Printer ink is going in two directions, on one hand you have HP and their "ink as a service" and remote-disabling cartridges when you stop paying, on the other hand you have Brother and others with ink tank systems that have zero DRM and you just squirt ink into.