The point of having a mandatory plan is to force people to contribute. As someone said earlier, when it's voluntary, you get what we see today: very few people are covered by private plans.
I understand what you are saying about low-income earners. Does this call for special measures? We can look at that and talk about it. I have ideas about how to provide coverage. For example, you cannot contribute to the Quebec Pension Plan or the Canada Pension Plan unless you earn more than $3,000. That's one way to ensure coverage. However, employers and employees subsidize the system, and I'm wondering whether it is their place to subsidize low-income earners. Perhaps that should be the government's role. These are all issues we can discuss.