I credit Google for having the foresight to identify threats to its main business of selling advertising against search results. The potential loss of market share in the mobile space led them to the Android acquisition.
The electronics industry expanded rapidly and the seeds for the semiconductor and software revolution were planted. The postwar period also saw the suburbanization of America, the rise of the homeowner, the build-out of the interstate highway system, and the rise of automobile culture. Credit availability expanded dramatically.
It is important for investors to understand what they do and don't know. Learn to recognize that you cannot possibly know what is going to happen in the future, and any investment plan that is dependent on accurately forecasting where markets will be next year is doomed to failure.