"Free" software resulting in your data being sold is the software working as intended, it's orthogonal to the question of software robustness.

Software isn't uniquely high stakes relative to other industries. Sure, if there's a data breach your data can't be un-leaked, but you can't be un-killed when a building collapses over your head or your car fails on the highway. The comparison with other industries works just fine - if we have high stakes, we should be shipping working products.