Comment by DoughnutHole

Not particular unique - this is a common practice in a lot of agricultural industries. e.g. there are wine co-ops in France where many vineyards commingle their grapes to produce a commercial volume of wine under a particular label.

What these systems rely on is a governing body that punishes producers that don’t meet the body’s standards and ruin the party for everyone else. Amazon is the governing body here and has previously shown no interest in protecting legitimate producers from counterfeiters.