I think this may be missing the difference in differential risk.
If I live in a place with constant uncertainty, taking one uncertain bet over another makes little difference.
If I instead live in a place of relative historic stability with (real or perceived) short-term uncertainty, it makes a lot of sense to wait until the relative stability has returned.
Entrepreneurs in Ukraine have other options. Instead of building a restaurant or factory they could sit on their money for a few years until the war ends.
And do you think that is an equal differential in risk compared to someone in the US doing the same? I can think of at least a handful of reasons why that may not be the case.
If I live in a place with constant uncertainty, taking one uncertain bet over another makes little difference.
If I instead live in a place of relative historic stability with (real or perceived) short-term uncertainty, it makes a lot of sense to wait until the relative stability has returned.