It's not terribly common anymore, but people used to pay for the Coldfusion programming language...well at least a compiler/interpreter for it. Outside of some third-party things like OpenBluedragon and Railo, if you wanted to deploy Coldfusion in any capacity, you had to pay Macromedia/Adobe for a license.
I don't know of any companies that are still using Coldfusion and I haven't had to touch it since 2012 (thank god), but it certainly was a common thing for awhile.
I feel like this narrative is still apples to oranges and the concerns expressed are more about managing the costs all the SaaS products, not having to pay...