First of all, slots are complicated. Often if you have a major carrier at an airport, their adding a flight actually creates more connectivity than a totally new carrier. That's why at most airports the slot rules are: for any new slots, half the slots go to the incumbent because of the benefits there, and then half go to new entrants into the market to create competitive access.
We have to remember that Air Canada did go through bankruptcy and in that process they reduced service at Toronto, which opened a lot of slots. In fact, that was the time when WestJet made its major move from Hamilton. They still have a presence in Hamilton, but they developed a major operation at Pearson Airport because they utilized freed-up slots.
On the slots issue, also, there are other aspects. If we look at Toronto Island, for example, Porter Airlines there has the overwhelming majority of slots. With any new slots that become available, Air Canada would presumably get access to half, but an agreement between the federal government, the city, and the port authority has strictly limited the number of operations at the island. Porter got those slots originally. I can't speak for Air Canada but my understanding is that they would actually like to get in there.
If I can just make one last comment about the previous question, as an economist I always think in terms of things like depreciation rates, and so forth. I'd suggest that after 30 years if there were any benefits to Air Canada they have probably fully depreciated. In terms of any benefits to their shareholders from the aircraft or whatever, as has already been observed, those aircraft are long gone and Air Canada went through bankruptcy so the original shareholders frittered away their benefits, shall we say. They're long gone and I think we have to look at the way the world is today.