Mclaren Automotive and Mclaren F1 Racing were two separate entities in the Mclaren Group until Dennis sold his shares last year and they merged back under one ownership. However, no reports were ever made (To my knowledge) that F1 brains and human power were transferred to the road car project, and thus sacrificing its F1 development.
Mclaren, it their own word's lost the competitive edge when they become a team of engineers instead a team of racers. Key people left, few wrong concepts led to disastrous cars, they overestimated Honda early potential and the late switch to Renault led to the point were Mclaren is now.
One thing I will always respect with Mclaren is that they are never afraid to take a risk, to try new concepts even that might lead them to a disaster. Few years back we saw the “Octopus” exhaust layout on the MP4-26 that proven to be too hard to manage in terms of heat, the strange U shaped sidepods, we saw the Butterfly rear suspension which did not worked as well, we now have this weird nose on the MCL-33 ect, but we had a few good examples with the F-Duct, or with the third peddal, or the super slim nose of the MP4-17/18/19.
So as much painful it is to be Mclaren supporter this days, its also a fun ride and I'm sure they will be back, we will win again!