Carol
By that statement shows you have little understanding of the complexity of the issues. Take child protection typical issue- whether to remove disabled child of parents with learning disabilities, and who themselves are care leavers. Who is the customer? What does customer service look like? What if lack of health care, housing, benefits, issue with debt, etc are also factors?Add in foster carers and some prospective adopters.
What is in the contract to deliver? Now try and commission that service, setting out the parameters, and without creating reverse incentives.
It is a complex mosaic and by "innovating" in one part, other parts have a horrible habit of unravelling. And as the prison system has shown (see the disasters at Medway youth jail) privatisation and public service has a troubled history.
It is not about public good, private bad (I am not in the public sector) but at least we have long established public duties which can be used, if the public sector mess up.