No one mentions F1 hybrid? Mass produced vegitables and fruits are often offspring of 2 distinct varieties, carefully selected to inherit desireble traits from both sides but no guarantee for 2nd generation.

Kind of soft-lock drm bcs people need to keep buying the specific seed if people want max yield. (I've read article gathering seeds from store brought tomato, growth werent great and the yields were unstable in both taste and quantity, but they managed to iterate 6 generations or so. The "traits" of F1 offsprings stabilize around that so you can keep growing your own variety).

Heirloom seeds don't have this issue, but they likely have quirks or less immunity compared to F1.