It took 15 if not 20 years to commercialize even such obvious, low-tech thing as radio telegraph, which can literally be built form common house supplies. It happened about 60 years after Maxwell predicted the electromagnetic waves theoretically.

Red LEDs were invented / discovered in 1920s, became commercially successful as indicators in 1960s. Optical fibers were invented in 1920s or so, became a commercial success in 1980s.

Certain things just take time. Do not dismiss a good physical effect, they are much more rare than so-called good ideas.