It may be their decision to choose a carrier that doesn’t peer with IX but they most likely wouldn’t understand what peering is. Telstra and Optus are not cheaper by any means its just that is who everyone knows within Australia.
I am trying to improve my customers experience and that is why i would be enabling Proxy and utilising a service such as Cloudflare.
Wouldn’t it make sense for Cloudflare to purchase IP Transit and advertise their routes through the two biggest carriers within Australia to reduce hops to their services. Obviously peering with IX is cheap and i can understand why Cloudflare would peer with IX but a lot of carriers within Australia don’t.
I am a customer of Cloudflare and i can choose my carrier based on peering but 99% of our customers wont see the performance gain and potentially notice an impact to services with proxy enabled.