The worry is that information technology is now on the bend of a "hockey stick" curve, where it will suddenly take off at much greater speed than before. The resulting changes will not all be welcome in economic terms.
（人们的）忧虑在于信息技术现在到了"起飞"的前夕，它会突然以前所未有的速度发展。这样的飞速发展所带来的变化从经济学的角度来看并不都是积极的。