There is no financial incentive behind it on a personal level for doctors, given Canada's one-payer medical system, and euthanasia is counter to many doctors' interpretation of the Hypocratic oath.
You could argue that on a system-level there is an incentive to encourage euthanasia, since it could take expensive terminal patients off the bill. This bit does make many people (myself included) uncomfortable and there definitely needs to be checks and balances in place.