AH. There it is.
You are literally only thinking about one sport and not taking into consideration the other codes and what they do to the grounds.
Makes more sense now.
What are you talking about? I'm on a f**king league forum, of course I'm talking about the league.
Since you're incapable of working out what I meant and you need everything broken down to you:
The SCG is being overworked because of the Roosters and the Waratahs when the ground is usually only used by the Swans. The Waratahs are already limiting their use of the ground by playing matches at BankWest, Brookvale and McDonald Jones and I wouldn't be surprised if next year they play an extra game away from the SCG (perhaps in Woolongong, or in another part of Sydney where there is a rugby following like Cronulla). The Super Rugby season will be 7 home games only in 2020 so there may be as few as three games at the SCG. A one off orign and grand final will not impact this.
Belmore currently has no top-tier tenant other than the Dogs and can handle a few extra games each season. They can play Western Sydney Derbys at BankWest.
Souths can use the Showground, slotting around when the Giants use it as the primary tenant. Or they can use BankWest depending on availability although we don't want to overwork the turf, so I would not be surprised at all if they take an extra game or two on the road to Perth or similar.
The A-League teams won't be impacted, as their season is in summer. Now that we've seen the issues that popped up at Kogarah and Leichardt over the summer it is down to Sydney FC to more effectively manage where they schedule the games to allow the turf to recover.
If you would like me to film a video of how this works with me via a PowerPoint presentation and the use of finger puppets I am more than happy to do so.