It's obvious why economic elites support public-private partnerships. It's not only because they are a wonderful way to make scads of money with almost no risk. 

It's also because they replace ownership and control of public assets. Now, there is a system where one person has one vote, and accountability is guaranteed through parliament and the courts and everything else the constitution provides. Under the new sort of plan, voting rights are based on ownership and accountability is guaranteed by contracts and arbitrators created and maintained by the exact same classes as produced the owners.