I'm not a New Zealander so forgive me if I step on toes.I've read this about 5 times and I'm still not sure what your point is.
The biggest sport in NZ is rugby. Way back in second place is cricket. For such a small island nation, they are considered to be the rulers of world rugby which is statistically quite an accomplishment (bar a couple of vociferous objections from some saffa's). The whole country is mad about rugby and the whole countries energy is focused on producing a team that can murder any competition. While this is great for Rugby in NZ, its bad news for the Black Caps because all the best athletes in the country choose rugby over cricket. The Black Caps invariably end up with the passionate cricket lovers and second tier athletes who just didn't cut it at Rugby. This has financial consequences also because the cricket New Zealand find it hard to fill a cricket stadium but New Zealand Rugby can sell out a All Black match twice over. If you could for one second imagine the whole All Black team bringing that Economic clout, athletic capital, excellence and intensity to the Black Caps game and cricket infrastructure, do you think the NZ team would be languishing on the bottom of the ICC rankings?
This is where you can draw parallel's with SAF. The greater population are more inclined to choose soccer as an athletic outlet and this is where the parallel ends with NZ because while the choosing between rugby and cricket is a conscious choice in NZ, its not a choice in SAF because for most, cricket is not viable due to reason's stated in other posts. If you take another extreme example; a country such as India has a billion souls who are mad about cricket and has all their athletic potential invested in producing the best cricketers in the world (which they do...constantly producing some of the best batters I have seen). And then you get SAF...where the game is restricted to a select group and seeks to remain that way. If you are a logical and rational person and had your Cricket South Africa hat on, how would you go about trying to justify only investing in athletic capital from certain segments of the national population especially given our tumultuous history as a country? Does it not make sense that the bigger the talent pool you have to choose from, the more cricket exellence and economic viability you can produce?
This argument coupled with adequate national representation of the Protea's are 2 of the biggest talking points behind transformation in CSA.