The concept of FFP is fine but it has been abused by certain clubs. You can't take FFP seriously when clubs like Barca, Real, MUFC, and Juventus build up billions of pounds of debt which their owners never pay back. The whole foundation of MUFC is built on huge loans from US banks but the money owed has not been reduced in ten years.
The press say United's wealth is "organic growth" but there is absolutely nothing organic about their business model. The Glazers have invested nothing in the infrastructure or the local community. They don't even pay any taxes in the UK and hide their wealth in the Cayman Islands. But apparently they are the "good guys." It is absurd.