In the “olden days” (maybe 20 years ago) public telephones were ubiquitous in airports. The space was profitable to the airport as the provider paid for the privilege of offering the phone service and collecting the revenue from those phone calls. Cell phones put an end to that business; and while there are still a few “public” telephones in airports, they are few and far between.
So what to do with that formerly valuable real estate? How about sponsored work/charging stations. The space is perfect for short-term usage of a laptop/tablet and with power available, one can also get a charge for their mobile devices. And this smart airport turned it into advertising space as well.
Win/win/win. Great re-purposing.