I wouldn’t be surprised. Like many things, its probably very uneconomical to run a ketchup factory at half-speed for very long. So if you think governments will keep restaurants shut down for many months, you shut down your factory entirely. That supply then goes to zero.
We have a small bottle in the fridge for company.
It should be a lifetime supply.
That, and the main ketchup factories may be located in areas that are still not allowed to operate.
My employer manufactures construction chemicals. While raw materials are a challenge, packaging is equally difficult right now to to global supply chain issues.
Since ketchup is pretty much all commodity raw materials and is mostly sourced domestically, I suspect that packaging materials are the challenge.
Plastics are petroleum based and with the deep freeze in Texas, that’s affecting things all down the line.
(yes it’s warmed up but many pipes cracked and must be replaced at the refineries.)