Jokes on them, if (when) this reaches the US, I'm going to stop regularly subscribing. The only reason I usually have a subscription is for my nephews in another state. If I'm no longer subscribing for them, I'm just going to subscribe when a show I want to watch is on, so 1-3 months a year.
They don't really care tbh. A few may cancel their subscription but enough will continue to justify the decision. Netflix stats are already available to see.