I think your explanation for group 1 is true to a degree but have two other additional explanations: (1) Some element of group 1 is ideologically opposed. It might be copyright, or Luddism, or some other concern for our fellow humans. (2) Some are deluded into thinking there are only two groups and that group 3 people are all delusional.

Although it is probably an uphill battle I do think both groups 1 and 3 have things to learn from each other.