How can something millions of people use every day have no value?
Discussion
Because it has no scarcity.
The concept might have value.
The work (human or machine) put into creating the original code might have value.
Hosting the service, or some background processing, might have value.
Maintenance work on the code base might have value.
The code base, once it is published, can be copied an infinite number of times. It doesn't even have the scarcity of a nail or a tomato. You might eventually run out of copies of a nail or eat all of your tomatoes, and have to go to the store and spend money to get more.
How much does it cost you, to copy-paste an address, on your computer?
That's what the code is worth. Nothing.
That's how much you can demand for it. Nothing.