free data day...
anyone who remembers what happened to telstra's network when they offered free data for a day (because the network completely failed and billing/CS could not handle the refunds)
that day the entire network was terrible, the reason was they didn't have the capacity... 5G is great to get to the cell tower but they dont have the capacity in backhaul... they never will since its more profitable to charge HUGE amounts for very little data
maybe in 10 years time 5G will be some competition but its not going to have any effect in the next 3 to 4 years