Being engrossed in the present, I think a lot have failed and refused to envisaged, or envision the future such as viz ;
•Bitcoin replacing Banks.
•Robotics replacing Man-power.
•Uber replacing Taxi's.
•Amazon replacing Bookstores.
•AirBnB replacing Hotels.
I feel they simply don't like all of this and are intimidated by the future, do you think so likewise ?
In summary, the technology will be replacing the manual work and if all of them is deployed in true sense, it will be helpful for the humanity. We have already seen the advantages of Uber and how it changed the whole taxi industry. Robotics and Artificial Intelligence is the next big thing and bitcoin will also get more adopted with passage of time.