The thing about movies (even science fiction) is that they need to have some level of believability to them to keep them relatable. This is what makes horror movies scary, super hero movies exciting and heartwarming, action movies entertaining, etc. Ready Player One doesn't have that level of realism. I could never see the events that happen in the movie play out in reality and I don't see anyone ever making some of the choices that the characters make. It's a Sci fi movie that lost it's Sci. You can write a movie about anything but that doesn't mean you should. I could write a movie about a ghost that becomes friends with a sentient sofa and they teach baseball to a family of dolphins in space, but it would suck. That is Ready Player One.