Maybe he is bored with it and the sports car racing is providing enough of an interest for him.Same for me, I was never an emotionally invested fan but thought he was a great rider, very possibly the greatest. I blamed an element among his fandom for what the likes of Biaggi, Gibernau, Hayden and then Stoner copped, but 2015 demonstrated he was pretty much orchestrating everything.
Hard to knock his academy though, it has been spectacularly successful, having produced a dual motogp world champion and other race winners, and with Italian riders to boot against the Spanish domination of the premier class for the last 15 years. Arguably the academy has been more successful in recent years than the Red Bull rookie thing with all its resources.