It's an ill wind that blows nobody good.

The saying observes that an event widely regarded as harmful can still create an advantage for someone. A setback is therefore not necessarily bad in every respect or for every person.

It encourages a qualified view of misfortune by recognizing that harmful changes may bring opportunities, relief, or benefit to particular people, even when the overall situation remains unwelcome.

Used when discussing an unfortunate change whose consequences are not equally negative for everyone, especially when one person gains an opportunity or benefit from another person's setback.