Again, healthcare is a fundamental right to all Canadians/PRs and something that helps define our country, it's not some random public oganization. Especially since PR parents can become Citizens after 3-4 years here. There is no way Canada will ever deny healthcare to it's citizens, we are not the US. It will never happen.
If someone wants parents here long term but only covered with private insurance, they can use the super visa program.
Let me quote from a website.
"On December 31, 2009, the Federal Court made a ruling that requires the government to examine the possibility of a person subsidizing their own medical costs (through private insurance or insurance in their home country).
The Court concluded: “The ability and willingness of applicants to defray the cost of their out-patient prescription drug medication is a relevant consideration in assessing whether the demands presented by an applicant’s health condition constitute an excessive demand.”
Citizenship and Immigration Canada (CIC) must henceforth consider this willingness and ability to pay. Applicants will, however, be asked to supply a realistic and credible mitigation plan explaining how they intend to cover medication costs. The quality of the mitigation plan is the most important element in evaluating the applicant’s ability and intentions, and should portray the actual needs of the person concerned.
In 2010, the Federal Court made another ruling requiring the government to examine any circumstances specific to the applicant, which might prevent a simple, general conclusion from being reached. Immigration authority physicians are now required to individually evaluate each medical file, the medications needed, and the applicant’s eligibility for private insurance and/or their ability to opt-out of the drug insurance plan funded by the province or territory where the applicant intends to reside."
You are taking an argumentative stance for the sake of it. As I said from the start compulsorily vowing to take care of every PR social needs, which in effect will keep out a lot of people from becoming PR in first place, is neither rational nor compassionate.
Canadian judicial syste, seems to agree.