[epistasis]

This is precisely right, and for most people it's unlikely that their genome will be particularly useful any time soon.

For an individual, the questions are usually much more focused: for example if I have a baby with my partner, what are the chances that our child will have a recessive genetic disorder? This is answered right now with a carrier screen, where the only genes tested as the genes with variants that are known to cause disease. Much cheaper, much more highly curated, and put together and run entirely by experts in the field, rather than general technologists that are just running samples through a big machine.

Interpretation of the genome will take millions upon millions more individual genomes sequenced, but those individuals will only rarely, if ever, see personal benefit.