Of course they did. It's right at the top of every risk register in the UK, the WHO have routinely highlighted the impact of a pandemic could have.But we never did this for the Flu etc. No one in the world predicted this could happen. Majority of viruses that spring up are either too deadly to spread far wide (SARS, Ebola) or not deadly enough to trouble the world (numerous flu strains over the years).
Covid has fallen into that rare middle group of being potentially deadly but not deadly enough to easily prevent spreading.
I know this argument is heading back to your track and trace stance but we may never get another virus like this for another 200+ years and quite frankly Western population won't ever take to it.
There is even a Disease X thread on GoT: Thread 'Disease X' https://www.grandoldteam.com/forum/threads/disease-x.108119/ about the potential for something like Covid.
There have been numerous near misses within the last 20-30 years that gave warning signs.
The issue really is that it wasn't taken seriously enough.