If you sequence a virus and it has no genes that are found in any living organism, then it's hard to say that they're related... since all our definitions of re

If you sequence a virus and it has no genes that are found in any living organism, then it's hard to say that they're related... since all our definitions of relatedness come down to sequence similarity. We haven't found nucleic acids, as such, in extraterrestrial environments, but we also haven't been looking very hard. Nucelobases, but nothing that seems to encode information. However, most conventional explanations for the origin of life include spontaneous formation of genetic information, driven by environmental conditions. If genetic information alone can be spontaneously formed, why couldn't the simplest viruses be generated by the same principle?