For all those companies not even trying to get their staff to WFH now, well they'll be forced to do without those staff when they're ill (for weeks probably because even the mild cases sound dreadful) because they caught it when they had to commute for weeks. Compared to companies who sort out WFH and will remain less affected.
Why are humans so short-term in their thinking? Particularly in the UK, it seems to me.
It's fine if you try and fail, but this attitude where the tiniest justification is given for not doing something that could reduce spread is really dreadful. See also, people complaining that their insurance might not pay out so will go on their Italian holiday regardless....