Public wi-fi in airports and hotels is offered on the pay toilet model. It charges money to use low-cost plumbing facilities. I believe it would be better for airports, and their passengers, if plumbing usage were free, just as it is for water and trains between terminals.

Can we tell them how?

I'm thinking about this while going through the usual insanity of logging on, in this case at the airport in Zürich. Here's a photoset of the login gauntlet I just went through.

Bottom line: I have no idea what I'm paying.

Okay, I need to catch the next flight. More in Paris.