Well, last time I checked for a csgo jb server was early on 2017, and I could barely find an english one, and even if I did find it, it was crap. I'm guessing that if our server is good enough, it wont struggle to take a playerbase.
And as I said, it didnt get closed because csgo sucked, it was bad, it was crap, people were sh*t, admins abused powers, or cuz people live in 90s and their pcs are made up of stone, wood, clay or copper.
It died (and got closed) because:
the one who was supposed to make it work went inactive (idk who, dont remember)
And, as Ed and Ron have mentioned countless times, you can contact them, present your plans to them, and hopefully you get to be the manager of it.
Everything is there in case anyone wishes to manage it.
Well, even if it isnt, it can get done within a night or two.
If i remember correctly, when we opened the server, jb plugins were almost all in beta stage (some of them were released 1 week before we setup the server), and It still was cool, I assume plugins are way better now.