This term has been used to mean partnership funding, ownership and running of ....
However, what is really important now is to change the meaning of that term. We now have to have business, government and employees working together.
There has been too much emphasis on the 'business of business is business' and workers should receive less health and retirement benefits as well as loss of income and degraded working conditions and shareholders should share in the profits.
This will cause citizens to expect more from Government. If we want a balance between Government and private enterprise then both have to work together to create a positive climate for 'workers' who actually make businesses happen.