I’m not sure where you are located. You maybe able to command those daily rates but unfortunately the city of london the rates seem to be on the decline.
Multiples are notorious for dropping the rates and when I spoke to their head offices stating my daily rate they simply said this is our rate take it or leave it.
The fact of the matter is that as long as there is someone out there willing to work for the lower rates then they will carry on as they know they can get away with it.
If we all stuck together and had some solidarity in our work ethics we would naturally see the rise in locum fees to what it should actually be.