RE:Blackmail
This is the DRC attempting to maximize the economic benefit for its own people (hopefully, and not just a few super-rich parasites). This is not anti-business or anti-mining and not anti IVN. By maximizing the benefit of mining to the DRC this helps solidify the importance of mining for the country and helps grow commitment by the DRC to support the miners working there.
That's how it seems to me, anyway.