You have had the 1% inspiration - turning that idea into reality is the 99% perspiration.
Dyson saw an industrial dust extractor that used centrifugal separation. It took about ten years of hard work and countless prototypes to 'invent' a portable version of a very old principle.
English inventor and photographer Eadweard Muybridge spent seven years turning 12 individual images of a horse galloping taken in 1872, into a moving image. He invented motion photography - the movies!
As
@Clinton said, one has hundreds of ideas. You have only invented something, when the idea has matured into a product. Siemens realised that sound could move a ribbon held in a magnetic field and that movement created a tiny electrical current that was an analogy of the original sound. He even measured that current and gave up with less than a millivolt. Too small, he assumed, to be of any practical value.
He had thought of the ribbon microphone, but he did not invent the ribbon microphone, because he didn't do anything with that thought. That honour fell to RCA-Victor engineer Harry Olson in 1923, but it took him nine years to turn that idea into a working ribbon microphone and into a patent, granted in 1932.
And then we come to the knotty problem of the market - does anybody actually want this damn thing?
There had been scores of attempts at the creation of the synthesizer, the first 'real' one being the 'Dynamophone' created by Thaddius Cahill in 1896. Unfortunately, it weighed seven tons, so not very portable! It also needed an unbelievable 670 kilowatts of power to make it work!
In 1937, German engineer Harald Bode created a sort of synthesizer called the Warbo Formant Organ and in the 1930s, Lawrence Hammond (of Hammond organs and clocks fame) used his considerable wealth to create the very first true polyphonic synthesizer, which he called the Novachord. From 1939 to 1942, just 1,000 were produced and for want of demand, production stopped. One or two were used in the movies for horror films, but that was about all.
Their invention, the synthesizer, did not have a market until musical tastes changed. None of those people actually earned a dime out of their creations, although, today we regard the synthesizer as being one of the most important musical instruments ever created.
It was only when, in 1963, engineer Robert Moog built one of those crazy and unwanted instruments, using those newfangled things called transistors and they became portable, that the idea of the 'synth' took off.
But to do so, it had to be used in that other new invention, the combination of up-tempo country & western music with the 4:4 beat of the blues. We called it rock-n-roll.
