Furthermore, it's almost without exception that these technologies have weakened big companies, especially in the software industry. Cheap computing power that you don't even have to manage, a massive ecosystem of open source code, and powerful communication tools are available to anybody now. Big companies rely on economies of scale to offset the costs of organization. It's becoming increasingly difficult for them to win in an industry with almost no barrier to entry.
You can look at netflix , amazon , google and apple and the ISP's. each have a huge competitive barrier : wheter it's huge customer base , big data , big "relationships" , huge brand , huge brain trusts, large manufacturing volume, network effects, large costly infrasturtuce or a very very efficent logistical system. those are things that costs alot of money and are not easy to scale.
And if all that doesn't work , in many cases you can just buy your future disruptor.
Yes , we live in time of rapid technological change , but how soon do you see an internet level change affecting the industry ? and aren't today's companies more aware of the innovator's dillema and can handle disruptive change somewhat better(microsoft has done quite a good job at this)?