There is no such thing as a vitimless crime other than with the exception of someone buying drugs for their personal use or paying for sex. Even with that there will be those who live in the area that don't want those transactions taking place near them or their children.
With regard to ripping someone off whether one uses a gun or a laptop they can both be equally bad. Just ask any of Bernie Madoff's victims that lost their entire life savings, homes, and investments. When someone betrays your trust it's probably more difficult to get over the hurt than if a random person car jacked you. We live in a time where more and more teens are commiting suicide because of bullying tactics on the internet! One does not have to see or touch a person in order to make them a victim.