I believe the we in "we wanted to provide our customers" is Apple, not Apple and Google. Hyperbolic to call it blatant lying.
To get what they wanted without trade offs, without hidden compromise of their customers, they had to leave their partner. A partner, mind you, who had shown they will put better products (GMail app, Map app) on their own platform (I like both those apps on Android, and GMail on iOS is a joke).
By building their own from the ground up, they also prevent this from happening again with another external partner who wishes to gain some leverage over the richest company in the world.
I'm not apologizing for the decision, or the quality of maps. And while I love to stigmatize liars, this accusation waters down the insult of blatant lying.