I say, give them independence. Cut them off from the grid, water, sewage. Add border checks requiring visas if they want to enter the rest of the country. Treat them how you would treat any other country, with the influence of 300 people. See how long they last.
As a nice gesture, let them have another referendum to see if they want to rejoin.
Which is why they should face jail time, and Google should face fines in the billions instead. That's the only way they'll consider following the law next.
And yes, people at Google should also face jail time if they were told "It's illegal" and they said "Do it anyway"