Gentle reminder: the absence of evidence is not evidence of absence.
Doesn’t seem like a particularly strong counter-argument, unless the point is that sometimes we humans like to err on the side of recklessness in the name of progress.
or the harmful effects were missed, and the drug is dangerous
It just simply isn't worth the investment for CIO/CTO/CISO types because it isn't sexy. To say it's impossible is just factually inaccurate.
I know more than a few places doing 40gbps and 100gbps full packet capture for 30+ days. And relatively speaking, the investment isn't that large (for tens of petabytes it isn't as expensive as you might think).