I agree that it's down to your employer. If you don't like WFH and the office is shut indefinitely then you can either quit, look for another job or work remotely outside your home somewhere else, if practical. If you don't like open plan offices or long commutes and your employer wants you back in the office, then you can either suck it up, quit or look for another job.
true
but...
it's very expensive and time consuming to recruit. Contrary to what people think, it's never in the best interest of your employer to have a constant turnover of staff - with the possible exception of the lowest paid, very basic and unskilled roles who require next to no training.
WFH will be a definite perk to attract top employees.
If it was really "them" against "us" and employers calling all the shots, we would all work on minimum wage, have the most minimum leave, no bonus and so on.
There's a reason why the package that goes with your salary exist and why it does matter.
Imposing the old-fashion working in the open-plan office is unlikely to be the most cost-productive solution.
Jobs that cannot be done from home won't suddenly change!