I've been playing and running text-based MMOS (MUDs) that do this same thing since the early 1990s. Probably a naive question but isn't there anything that can

I've been playing and running text-based MMOS (MUDs) that do this same thing since the early 1990s. Probably a naive question but isn't there anything that can be done to void these by proving that this was being done on the internet for long before they came around?