While the scene has shown diminished interest over the years since its prime-time, there is still tens of thousands of players and far over a million dollars in revenue a year collectively. My opinion on this topic is - do you still enjoy RSPS? No? Then don't play - Yes? Then go enjoy them, there's tons to choose from. It will always be a niche community. RSPS has come so far and it's really exciting to watch - seeing how much some individuals have learned and what they've built. Who would've thought when we were 13 and running a server 10 years later you'd be doing the same thing on the side but under a business model and monetized?
As long as mine can generate enough revenue to cover its monthly expenses, I will never shut it down. 99% of people running RSPS are doing it solely for the purpose of making money; profiting - that motivation can be damaging in my opinion. I launched mine because I love the 718 era - it was my all time favorite but no 718 online was how I remembered it - it just wasn't the same or they were poorly developed. So I set out to build the best one and today I am very proud of what we've accomplished. I never expected what I got out of it, and it's been a fun and exciting adventure thus far.
So as long as YOU personally can still enjoy playing them, developing them, doing whatever it is you do with it - why stop?