What features of the OnStar service cost anywhere near $40/month to provide? Your phone does almost all of that for free already. The only sustaining cost is

What features of the OnStar service cost anywhere near $40/month to provide? Your phone does almost all of that for free already. The only sustaining cost is the mobile traffic. (For reference, Tesla's "premium connectivity" feature that provides YouTube and satellite imagery and remote camera streams and such is $10/month).