Yes, we will always have risk in aviation...if you fly an helicopter, there is tons of things who could happen.
The question is how you manage the risk in your specific operation?
Transport Canada like the FAA is an organisation who refuse to go against the operator because nobody has the guts to put his name against a valid problem, a known problem who could result in an accident. When the accident happen, now they come back with big ideas and non compliance in specific operations. It is simple, operators are more powerful than TC. We had a good example recently with the H1 helipad story in BC and Nova Scotia.
We talk about having NVG's a lot in the past, but the answer was always the same: "To expensive....will never happen....forget it...."
After having 4 guys dead, the company had to do something to prove their will to improve the safety of this operation, but hey, we just finished the NVG qualification for all our base, we are in May 2018....