Hi Mr 'Traffic .....'
Waaay back in those times, we (in Perth) heard that Canada had some towers in isolated areas which were costing too much, and not justified on a traffic numbers basis, so on a visit to OZ, they saw the 'remote AFIZ' idea in action, and introduced the same service operated from Centres, to replace the costly towers....
The communications 'safety net' was provided for less cost.
I'm glad to see that Canada still has Flight Service!!!
They went 'forwards, whilst 'we' went .......(?)
Cheers