I can't see them doing this. They want want PIP or background audio to be a paid features on a phone. You don't need PIP on ipad, as youtube app already supports split view, 70/30 and slide over view so it's not a big loss there. 
I feel like PIP would actually lead to more ads and more next video being played on a phone though.
	
		
			
		
		
	
				
			I feel like PIP would actually lead to more ads and more next video being played on a phone though.
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		