If you mature some coins long enough and transaction size is below 1k, you can send it for freeNever knew this , so let us suppose if a address like this
https://blockchain.info/address/1CFBdvaiZgZPTZERqnezAtDQJuGHKoHSzgever gets active and decides to send the coin , he /she/they can send it without fees and still get it confirmed ?
The address you linked has 50btc in it and has been resting for years. It will qualify for a free transaction. It might not get confirmation within minutes, but I am sure it will eventually. It is up to the miners whether to accept transactions with no fees. Most do.
I'd say miners & pools have a vested interest as many of them consider encouraging people to pay fees by only including transactions with fees. If nobody was paying fees they might not earn enough to get by and this would result soon in them stopping the mining and weakening the whole bitcoin networking.