I took "A considering B" to mean "The truth of B strengthens the claim A."
Regarding Apple's history with DRM, that's not something to completely ignore but its not very compelling, either. I see no evidence that Apple (especially as it exists today) has a true, sustained ideological position against DRM. Apple explicitly positions themselves as the platform with the least regard for empowering their users to use their (mobile) devices as they see fit (because being seen as 'more secure' is marketing gold). If the situation arose in which Apple's leadership believed they would make more money (on the whole, and long term) by embracing DRM in more places, they would do so.
Regarding Apple's history with DRM, that's not something to completely ignore but its not very compelling, either. I see no evidence that Apple (especially as it exists today) has a true, sustained ideological position against DRM. Apple explicitly positions themselves as the platform with the least regard for empowering their users to use their (mobile) devices as they see fit (because being seen as 'more secure' is marketing gold). If the situation arose in which Apple's leadership believed they would make more money (on the whole, and long term) by embracing DRM in more places, they would do so.