Exactly if you look at the mining rate is reducing , we have started experiencing the scarcity now , it have started by reducing the rate , up to the time that 1π will be very difficult to mine for a whole day or a week , especially during open network , that time they won't talk of mining any longer , the main thing is trading / transaction on goods and services , at present mining is still in pipeline , like a case of mine , about three days ago I'm on mining and I have not gotten 1 π pi , but the figures on top is increasing till date , but the in mainnet still remain uniform