I definitely don't agree with that. Elvin Jones was just as good at playing drums as Coletrane was at playing sax/clarinet and just about everybody that started playing with Miles Davis ended up on the all time who's who of jazz list. Part of being a great bandleader is picking the best to play for/with you. Sure, the stuff with larger ensembles then there's a few seats you can fill with a competent session guy but both of those dudes released quite a bit of stuff with small ensembles.
Miles and Coltrane (and others of that stature) are who the people are primarily coming to see and hear and buy their recordings. I'm not trying to diminish the roles of others in the band as they were all equally important in the pure musical context (which I alluded to originally), but at the end of the day, it's still Miles and Coltrane who chose (and sometimes write) the predominance of the material they play live and record.
I disagree. Jazz albums weren't big sellers in the eras these guys were releasing in and the albums they did get big sales on were due to the quality of the product vs people buying a name. Miles Davis made some big money from Columbia but they signed him for the prestige and credibility of having Miles Davis with their label vs what he could produce in record sales. A Love Supreme sold huge but it's sales were way out of line with Coletranes other album sales (name me 3 other Coletrane albums off of the top of your head) and the reason it sold is because it's one of the most seminal albums of all time. These guys were competing with rock and roll which was built for mass consumption.
I guess my point is that jazz isn't a genre that a guy can sell albums from name recognition unless it's some abomination like Kenny G or something.