I think it’s a combination of factors.
My experience is that the difference in price has become less noticeable to do a group order vs ordering yourself.

Also it has become a lot easier to do individual online orders, which was part of the initial drive, and with a lot more local players in the market there’s less issues with distribution. Some of the bigger guys will do order bundling, so that you can effectively create your own group order and save.

I also know that with the launch of Amazon within Australia and my Prime membership, it means means I’m not really looking outside Australian sources for my purchases any more.