Good question, I don't know, but it feels as if their bug bounty service is something that contributes to the level of trust in the apps listed in the play stor

Good question, I don't know, but it feels as if their bug bounty service is something that contributes to the level of trust in the apps listed in the play store for which they charge a premium. Less trust; less money on the line on which to base that trust equates, for me, to a reduced premium for a listing.