I see where you are coming from but on the flip side if they do that this season and Bronze members find it impossible or just very difficult to get tickets even with the membership then they won't buy it ever again. If they want folk to keep buying the membership it would be ethical and...
So...
23,000 Season Tickets (Including 1901)
3,000 Away Fans (Not all going to bring that mind you)
1,000 Players family, friends, Press, scouts, sponsors etc (Just a guess happy to be corrected)
1,000 Segregation (Just a guess, happy to be corrected)
only leaves 2,000 tickets for Joe...