(I didn't downvote you.)
I agree that the predictions of a tanked economy are primarily coming from the same places that predicted a Kamala win.
And who knows, maybe it won't tank. Objectively though it's fair to say that tarrifs don't typically help an economy. Certainly not in the short term, and in thus case likely not in the long term.
The problem with tarifs in the US context is that they can go as quickly as they come. I'm not going to build a factory here (a multi-year project, with a multi-decade level of return) if the tarrifs can be lifted at any time.
So I'll either just find an alternate source of supply, or more likely (as in the case of Mexican fresh produce) just pass the cost onto the consumer.
Which means that the link between Kamala predictors and Economy predictors is irrelevant.
Will AWS come under threat? Probably not. Maybe it gets a bit more expensive for a while. When that happens obviously you have time to figure out a solution.
While it's useful to have a plan and process for a reasonably fast change, "fast" in this case is like a month. And if AWS is simply banned in Canada overnight, well frankly that'll tank Canada's economy so badly that the 2nd hand clothing business will be booming. (Ie Canada won't do that, and it seems unlikely that Trump/Bezos eould.)