I think most other formats/software support things like splitting, "healing" archives and self-extracting archives by now, so the only reason I could think of i

I think most other formats/software support things like splitting, "healing" archives and self-extracting archives by now, so the only reason I could think of is getting the "premium support" where you can quickly reach a human to help you with whatever problem you have. That might be more important for larger companies rather than individuals.