Regarding better health care for the aging population, what are the payment sources involved?

On a
very basic level, there are three main ways in which people pay for health care. First, there is
a purely private system, in which individuals pay out of their own pockets if they can afford
it. For many underdeveloped countries, this is still the norm. Another method of paying for
health care is to consider it a basic human right (as it is enshrined in the Canadian Charter of
Rights and Freedoms, for example), and pay for it out of public funds, as...