I do think if the world and everything in it has to go into lockdown for a year to fight a disease that really doesn't affect many under the age of 50, but cuts like a knife through butter amongst the over 70's that there will be potential riots if not outright revolution unless those who are of working age are adequately secured/compensated by massive economic reform in their favour if they are to sacrifice (for many another) a decade of their working life and years of their social life. Otherwise, as an earlier poster said 'just let the olds die' won't be something said ironically.
Those same comfortably-retired-to rich olds who succumb the worst to this disease are also the most influential voting block of every western country, as well as Japan. Public policy -- closing elementary schools and universities
in addition to restricting the mobility (and earning power) of the young to preserve the health of the elderly -- will not change from what it is now.
Besides, there is a case to be made that the mobility restrictions keep the health care system from imploding from being overwhelmed with sick patients.