Why, there's not much money in those anymore unless you invest a ton of time on huge amounts of automation/infrastructure and at that point you couldve built a much more reliable SaaS business and playing RS isnt fun anymore.
source: invested a ton of time in that during HS when the getting was good ($5/m)
There is a lot of money in them, there have been plenty of companies and individuals making >$100,000 ARR by just working on MMO automation. Maybe some other SaaS ideas are more reliable, but it is more difficult to ensure you have a profitable idea and more uncertainty exists throughout the process.
source: invested a ton of time in that during HS when the getting was good ($5/m)