That might be true for products or services that people need and know. But what about new or less known ones? For example, I will buy a car and one car only. Al

That might be true for products or services that people need and know. But what about new or less known ones? For example, I will buy a car and one car only. All the advertising is not going to make me buy two. However, for electronics, I might buy an additional TV or another tablet, or gaming console.