Do you remember the no poaching agreement started personally by Steve Jobs? They have been a cartel for decades. They share board members, they compete only as much as not to threaten the status quo.
I've been saying it for years, but I never thought I'd see either company say anything like that as boldly as they did. It's like something out of a cartoon.
Eric Schmidt was CEO of Google starting between 2001 (so 2 decades ago) until 2011 and Apple board member between 2006 and 2009. He wouldn't have gotten the position in 2006 of Google and Apple weren't cooperating.