Studios aren't clueless, this is their business. They take advantage of every hardware upgrade, have already expanded into the cloud, and the bigger companies have direct R&D access to nvidia's engineers to develop the next generation. Everyone wants faster graphics and lower costs, and they already use real-time rendering everywhere, especially in editing.
Yes, better hardware has made it easier for more people to produce more things, as evidenced by the exploding world of Youtube creators making high-end productions. However there is an immense difference in overall quality between those videos (which can easily climb into 6 figure costs) and the big budget studio productions that fill cinemas.
Also graphics are a tiny part of the overall product. The rest is the creative process, building the actual scenes, and making it all look and feel right. There's no magic button to transfer your imagination into the computer, and that's the majority of the effort, along with actually coming up with a good story in the first place.