Kinetoscope/Cinematograph

The Kinetoscope and Cinematograph were created at the turn of the century and ultimately changed media forever. The Kinetoscope in 1893 from Dickson/Edison was the first personal film viewing device that was develiped for the public. There were other inventors around the world trying to create the same thing which to me poses the question. Had other advances in technology lead to people pushing to invent such a device, or had the education system progressed to a point around the globe that people were finally gaining enough knowledge to create such devices, or was it just a "coincidence" that these devices of similarity started to pour into the market around the same point in time? These three points I brought up are very much so controversial and are very hard to prove which of them is the true reasoning behind the inventions timeliness in the 1890s. I have yet to find the real answer but would like to find out.