Government privatization increases the cost of necessary things such as water and power because corporations are worried about increasing profits each quarter, which makes prices continue increasing constantly. It is a dangerous practice when dealing with infrastructure because wages never keep up with these increases, putting working families further and further behind. The government needs to handle infrastructure to keep costs down for everyone, that is the purpose of tax dollars.
Until very recently in human history, governments were the only entities permitted to assert title over property. Since privatization and private property rights have been recognized, humanity has seen the largest exodus from abject poverty in human history. All of this positive development is the result of private property rights.