Call Me God wrote:9,525 was the average attendance at Castleford in 2017.....5,289 was the number at Wakefield...one club is closer to 10k than the other and those extra fans make them closer to self sustainability.
10k average is the self sufficiency number....and that's with the SKY cash.......every fan below 10,000 means £15/£20 less income and £15/£20 needed to be found from elsewhere.........thus, currently, Wakefield aren't as close to sustainability as Castleford and therefore by association are bigger and are more sustainable whilst filling more of their potential.
So Cas are currently attracting 22% of the town's population - a figure that is not only going to be difficult to grow but also a bit of an outlier in terms of their usual numbers over the years - a very good season last year on the playing front having I'd say a pretty significant effect on those numbers and once their on field success wanes (at it will) numbers will drop again. Another factor against them growing much more is that even if they do actually get a new ground the published plan is for a stadium wirh a capacity of 10000 so they will have to be selling out EVERY week to become sustainable (based on your figures). If the plan really is to grow the game and attract new, significant money, it won't happen with the current incumbents remaining.