I agree that perceptually, charging the individual punter a fee to get into or escape from the airport is a management seemingly determined to actively discourage passenger use. I suppose because it's done at YVR (and certainly used to be done at Montreal), the Canadian owners think that it's an acceptable practice, but that's in a country where the price you see in a restaurant doesn't include the tax, nor the service charge (this latter can appear on bills now as a standard 17%). There again you could argue that they are only emulating some of the FR pricing practices, so FR should be happy to look at a business with a similar strategy
More seriously if MOL has said that, believe it, and unless FR can bring daily 100's of spending pax through a terminal (therefore allowing concessions rents to rise etc), which would only be achieved by having several based aircraft flying multiple routes and frequencies, what is the point in the airport offering cheap prices for a couple of flights per day, which need a peak of resource requirement to service (ie expensive to provide) ?
Oh, and don't forget that FR are cutting back at PIK, and that PIK has the advantage that FR are committed there because of the maintenance facility, which means their acraft have to fly there anyway.