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.