The way you put it—"FOMO in children," really does it justice. The way Apple uses their messaging service is almost psychological manipulation of children to increase their market share.
It's so sad that a company that resorts to those kinds of tactics to increase their market share, as opposed to, just selling more of their product because it's a superior product.
It's so sad that a company that resorts to those kinds of tactics to increase their market share, as opposed to, just selling more of their product because it's a superior product.