Unpopular opinion, but "meh...whatever".
As far as privatisation is concerned, there are four untouchable and sacrosanct necessities: healthcare, infrastructure, policing, and utilities. None of those, in a broader sense, should ever be managed by private corporations for a profit motive.
But if you want to add some money to our coffers by farming out the day to day operations of things like airports and other less critical things, I have no issue.
I couldn't care less whether my government was directly managing how many fucking Timmie's airport "x" can support, or whether a private company is given the contract to handle janitorial services in government buildings (for example), or whether the government wants to contract out it's parking enforcement lackies. Who... cares.