I agree that this would be their argument. But as other commenters mention, this area could be a minefield for Apple due to their dominance in various markets.

I agree that this would be their argument. But as other commenters mention, this area could be a minefield for Apple due to their dominance in various markets. It's possible they wouldn't want to get sucked into a lawsuit about this, even if they thought they could win, since they might end up making statements that would have a larger detrimental effects in other cases/potential cases.