How sure are we that "digital" coupons aren't personalized? And even printed coupons in mailers could have been customized. To a personal level, or to a neigh

How sure are we that "digital" coupons aren't personalized? And even printed coupons in mailers could have been customized. To a personal level, or to a neighbor hood, or zip code level. If Instagram had sent out individualized coupons, would that be better?