MPC has many real world usage, through MPC business can collaborate on risk control, know-your-customer (KYC), blacklist sharing, security model analysis, distributed key management system. Organizations are looking for solutions based on MPC.
One key problem that MPC can address and explained by frobes is fake volumes on cryptocurrency exchanges. MPC in the context of exchanges means that "exchanges joining forces to self-regulate, and to expose that they are solvent beyond a precise threshold without revealing the exact financial details of each exchange."
I see. since exchanges don't have to share there actual financial data and that's the biggest cookie they are getting for sharing real data. It will finally bring transparency in exchange data. A thing longly desired by the crypto community.