Einstein copied who? Where I understand the fact that most inventions are not 1 step but then again it doesn't mean people copy things and become successful.
They learn their own way and create their own theories out of what they learn. That is how inventions are done not by just copying other people stuff.
While I understand your thought here, but why is Einstein so well known? Before I get slated here, I admire him tremendously. However, have a look at what he invented...
Einstein was more of an extraordinary thinker, theorist, physicist, and mathematician. He explained why things happen, such as the wicking (capillary action) of paper towels. Why we all go around the sun, theories of relativity, photoelectric effects, wave-particle duality, quantum theory of light, the existence of atoms, and of course, E=MC2.
All of those things, and many more, were used to create inventions. Google Maps, and any other satellite navigation system needs to incorporate Einstein's general theory of relativity to help not get us lost. Did Google invent Google Maps, or did they add to his theory? Without many steps, including needing a car. Which, by the way, started as a steam-powered car, built by Nicolas-Joseph Cugnot. Do you think he invented the steam engine, too? Or did he just put it onto something with wheels? Which, by the way, was not his invention.
The four-stroke engine that we now use was patented by Nicolaus Otto in 1876, although patented by him, the first designs were over 300 years before by Leonardo da Vinci. That was just a drawing and design though.
Come on... there are very few people in the history of the world like Einstein and even the Einstein refrigerator needed the help of Szilárd, and was "only" an improvement of the existing home refrigeration technology that existed.