Jon was always business focused, long before he made it..he was never ever a hippie who wrote a couple of genious records and fame just happened..
jon was among the first to realise the change in the business and sucesfully managed to adapt, repeating their success again and again..
in truth i d say jon is disenchanted in a way...his main instrument limits him nowdays and a substantial part of his mojo, richie is/was gone or washed up.
i d never wrote off a guy like jon, because even if selling out the desert was all he aimed for i think he did it with style most of time, escaping the traps of fame..
disenchanted for me would be the word...he enjoys music, but he has partially lost his passion and isnt able to go 100% into it..