due to the artists' own fear and concerns.In Tip's perspective, the reason we have yet to see an OutKast reunion or even Dr. Dre's long-awaited Detox LP is
"From me speaking to Dre man I heard him being open to it, I really did.
I think his concern is do the kids right now who are young and buying
music care enough about an Outkast album for it to make a difference.
Which is the same concern that I hear from other people that we all love
and respect in this industry like Dr. Dre. I was working with Doc on
"Detox" and that was his same concern. Of course we're looking at them
like we have such huge admiration for them for what they've done in the
past, but they are looking at themselves kind of like 'What do I mean to
the young kid of today that is going out there to buy music?' That's
what the struggle is." (The Urban Daily)
source - http://www.sohh.com/2013/01/ti_reveals_whats_holding_back_outkast_re.html