oh wow....this was really unexpected, as I haven't read much of your work.
the first surprise was the length...it went really in depth into a topic that so many have failed to make dope. I really enjoyed that bit.
the next surprise was that you seemed to get the gist of both worlds....but there was no grey area. Are you trying to say that commercial and underground don't have anything in common?
anyways...the only thing that could use some work was the flow. try to even out the syllable counts in your lines, makes for a better read and a better rap.

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Life isn't a bitch...
she's just sick of being personified -Sage Francis