Even the lowest estimates (the National Crime Victimization Survey) estimates annual defensive gun uses in the US at 60-80k per year. Highest estimates are at around 2 million.
But even then, most usage is at ranges, and far outstrips crime usage.
I don't think it matters in the light of this ruling. Cox could have argued that 99.9% of their data packets are Netflix and downloads of free Linux ISOs, yet neither court nor the ruling cares.
But even then, most usage is at ranges, and far outstrips crime usage.