In my opinion, from what I am reading, there is a root cause analysis in there under the heading "Reliability of Rogers network architecture". I removed the redundant and contradictory parts.
> [...] both the wireless and wireline networks sharing a common IP core network, the scope of the outage was extreme in that it resulted in a catastrophic loss of all services. [...] It is a design choice by [...] Rogers, that seeks to balance cost with performance.
Based on this write up and details I gathered, I believe the root cause, the fundamental reason for the failure is incorrect cost-to-performance balance at senior management.
> [...] both the wireless and wireline networks sharing a common IP core network, the scope of the outage was extreme in that it resulted in a catastrophic loss of all services. [...] It is a design choice by [...] Rogers, that seeks to balance cost with performance.
Based on this write up and details I gathered, I believe the root cause, the fundamental reason for the failure is incorrect cost-to-performance balance at senior management.