The subject of the first game is up for some debate as you have electro mechanical things that still operate on what is undeniably boolean logic (see babbage engine vs colossus), oscilloscope games, board games which at some level relied on electronic calculators and more besides. Everybody plays games, it is natural to want to make anything you have into a game or something to mess around with.
The PC then. What is what there? DirectX did not take off until well into my lifetime and points when I was playing with PCs (see also 3dfx, s3 virge and Matrox for at the time very real competitors in the 3d market) so there were already competing standards within the PC framework. There were cards to turn computers into other computers, things like the Amiga existed and despite serious game libraries were often pitched as general purpose computers (and more, a popular thing to look into being the CGI in babylon 5 being amiga based for a while), the commodore family, the amstrad, the atari, the bbc micro, the colecovision.... The PC as we know it today is considered something of the result of a monopoly by IBM and then Microsoft. Most other industries have some serious competition where PCs kind of did not. The PC did not in and of itself cause the transition of computers into commodity devices however, for my money such a thing being more related to moore's law which would have continued regardless (electronics being far bigger than just PCs).
Few would argue Japan did not punch considerably above its weight (
https://www.google.co.uk/publicdata...0&tend=1449705600000&hl=en_US&dl=en&ind=false ), but to pin the existence of an industry, or the resurgence if you believe in the crash, is a rather bigger ask.
Why people like Japan's stuff is a discussion worth having as well. Some have pondered whether as you did not presumably grow up in Japan and with Japanese culture then the sense of other that it brings might be something different than what Japanese audiences which did grow up with it gain. Or if you prefer the things you might like in say Japanese school anime would be a similarly bad thing to draw a conclusion from than watching some Disney channel show about US schools or whatever the current BBC kids show might be that does the same for the UK. To that end one wonders if it had not been Japan then would some combination of countries (similar to how Europe is viewed as a monolithic entity despite some rather big issues with the concept) in Asia have instead ganged up and now we would all have some broad/watered down knowledge of Thai and Pinoy culture/folklore/mysticism. Or if you prefer look up Nang Tani (ghosts in banana trees, from Thai folkore) and tell me that would not work as well as a kappa or something. Or more cerebrally a variety of folklore from Asia is rather different in style and outlook on the world to the European, Middle Eastern and such stuff enough that it also gains a bit of a sense of other.
I am also going to have to look into the impact of Final Fantasy 7 as a whole, certainly had a massive impact on Japanese RPGs but as a whole it is rather more hazy from where I sit.