An undifferentiated targeting strategy is effective when the target market has similar needs and preferences, and when the cost of developing and implementing separate marketing strategies for different segments outweighs the benefits of targeting specific segments. It is also useful when the product or service has universal appeal and does not require customization for different customer groups.
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If you don't use Z targeting it is so much easier, so if you use a hammer, cause he can't copy it, it will be easy as hitting a nail, you just have to hit him, he'll do nothing. So it should be really easy. If you use Z tageting, you won't really hit him. Cause he can dodge.