So, they just will become coworking spaces, with additional amenities (4K monitors, standing desks, advanced chairs) available at extra pay. Maybe you could even book them for a couple weeks, or months, to be yours.

Then imagine that your employer would offer you to compensate the coworking space's cost. And maybe the corporate Slack channel would start coordinating colleagues to go to the same cafe / coworking space to improve communication. Etc.

And all this stuff would do nothing to limit one's exposure to viruses and other pathogens; if anything, it would make the situation worse, by mixing people even more.

Work from home (or its equivalent, like a long-term remote resort in a cheaper country) makes sense.

Work from a well-situated, well-stoked office makes sense.

Work form "anywhere" makes way, way less sense; one must be hard-pressed by circumstances to choose it.