They need to adjust the difficulty more. Look at the hashrate over the last year, it exploded in the last few months: https://blockchain.info/charts/hash-rate BTW, if you ever needed incontrovertible evidence that hashrate has no influence on the price of BTC, compare that graph to this one: https://blockchain.info/charts/market-price There's no correlation. I wish the market price was increasing as steadily has the hashrate.