In many domains of science I will agree with you: success in physics is unlikely if you don't have a strong physics background. But many modern technologies ar

In many domains of science I will agree with you: success in physics is unlikely if you don't have a strong physics background. But many modern technologies are much less mature. For example, a good general background in software engineering helps, but following state of the art is not critical (and may be counterproductive) for building new products. My 2c.