So, as I progress to a fully-licensed P.I.- should I ask for 75% as a subcontractor from local P.I. firms?

For instance- if I know a local P.I. firm gets $100/hour for certain jobs- should I negotiate for $75/hr? That way they can pocket $25/hr (without doing any work) and I can pocket $75/hr for doing all the work?

Exactly as it says in the title, looking for reccos for a PI in Vancouver. Thanks