Yes, it's more likely in China because it's more likely to happen in a blatant way, especially between companies directly.
But don't kid yourselves that the US intelligence would never pass on trade secrets or confidential information to benefit American competitors. Especially if you consider that they've actually sabotaged foreign companies because of business relations to countries the US doesn't like.
FWIW: I would never put confidential information on Chinese infra. But as a non-American I'm only slightly less worried about doing the same with American infra. It's not so much about whether someone will access your confidential information, it's more about who they are.
But don't kid yourselves that the US intelligence would never pass on trade secrets or confidential information to benefit American competitors. Especially if you consider that they've actually sabotaged foreign companies because of business relations to countries the US doesn't like.
FWIW: I would never put confidential information on Chinese infra. But as a non-American I'm only slightly less worried about doing the same with American infra. It's not so much about whether someone will access your confidential information, it's more about who they are.