Just pure demand and adoption will increase the price of bitcoin again. And why it's still down? everyone has an opinion that it's due to the bear market. But I have a good news to all of you, maybe some of you hasn't online and haven't seen the prices on coinmarketcap.
Check and look on it and you will see that bitcoin is starting to pump again. From $3,400 it easily reached $3,700 though the increase isn't the same as before but with such increase everyone is starting to gain confidence again.