It would be difficult to create a game, but, with enough time and dedication it would be possible. Keep in mind making a game isn't just developers... which we have few trustworthy developers left; it's also creating textures... legitimately thousands and thousands of them; it's creating 3d models which we have very few in the community with the ability to professionally create 3d models. It takes years to make a game and often upwards of over a hundred thousand dollars... and that's for a team of hundreds. Even creating a basic game in unity would take a huge amount of commitment.
Plans already exist to create a game, and those plans have been in the early phases for years. The lack of what I mentioned is the key failure slowing down reaching the production stage.