It's not the loss of income as such. It's the principle of unknown agencies claiming that they own recording rights and the copyright of songs that they have no legal part to any entitlement. They do not give proper credits to songwriters and when they do it's often wrong. Someone I know for instance did not assign his digital management rights to these organistations but they have been taken from him without consent. Only this artist should have had the right to exploit his albums.

   Also, The robots and databases they circulate are often wrong in the information given out on the artist and songwriter.

It's about complete strangers taking songs and material that does not belong to them and undermining artists and songwriters rights.

Youtube aid and abet the agencies, and if you have more than three disputes they strike you off. Youtube do not take the part of the public or artist, they uphold the judgement of the agencies who are making false claims on works. Their dispute procedures allow the distributing agencies to be their own judges. It's like putting robbers in charge of banks.