If your server script is unique but run poorly, it won't survive. It's not all about the script, it's not all about the players, it's not all about the administration - it's a combination. They all have to work well together.
I could not agree with you more, they all play a major part in the server, you take one of them out and BOOM. That's how certain RP servers have made it others, and same goes for Freemode servers ETC.