It can be unreasonable, like you mentioned, if you originate from specific countries. For sectors like Defense, Aerospace etc., you literally can't work unless

It can be unreasonable, like you mentioned, if you originate from specific countries. For sectors like Defense, Aerospace etc., you literally can't work unless you are a permanent resident or a citizen. Which means, even if you do have a visa, without a path to permanent immigration, you can't really contribute in those sectors, making it unreasonable.