The Mechanical Licensing Collective was established to streamline digital mechanical royalty payouts. But even well-intentioned systems can be designed in ways that introduce new risks. That includes the lack of recourse for rights holders and the roll-up of unmatched royalties based on market share. But the biggest issue is the ease with which the system can be manipulated.
Source: Duplicate Works, Diverted Royalties, and What the MLC Isn’t Catching – Digital Music News