I'm not no sure. 90%+ of these services are commodities and nobody gives a damn who the provider is from a technical perspective. There's no physical component, so it's literally a matter of signing a contract, spinning up a server/service, move the data and point everything to the new service.
And yeah, there are technical issues that come up, and nothing is ever that easy. But think about how fast many, many companies were able to sort that kind stuff out when the had to when COVID hit.
And that's the thing. Cloud service disruption can be an existential crisis, so why would you leave it in the hands of a hostile foreign power?
That number is supposed to be how much of the tariff that the exporter passes through to the importer. Essentially this is a measure of how much the producers lower their profits to lower the price to compensate for the tariffs. In other words how much the producer "pays for" the tariffs.
This factor is "backwards", in that it doesn't represent how much the producer swallows, but how much they pass on to the importer. Trump's calculations assume that the producer only passes on 25% of the tariff price increase, but the experts say the number should be much closer to 95%.
I have to idea what "4" means.