Not saying you're wrong, but you pretty much just described how he compromised himself, by forcibly changing his music for a wider audience and conforming to the popularized mainstream aspects of the music industry. You mentioned charts, and how difficult it is to obtain a larger status, which is the point of reference as to why an artist changes their natural and original musical personality. They compromise to reach a higher status, and therefore a larger audience. There are a lot of underground artists that haven't changed their formula and don't live poorly; something like finances is all about the individual and not consequences of your style or philosophy.
The fact that you expect him to release and have two distinct styles, one for mainstream albums and mixtapes for the "other fans" and credibility, points to this change. Compromise means changing yourself and giving up something for more exposure, and more money, rather than obtaining that through progressive recognition. It's a shortcut, which leads to lack of credibility.
:lol 
