The paradox is usually presented as:
The People: Hey local government! The roads are so packed with cars they are useless. Fix it!
The Government: We hear you and just finished a huge road expansion project. The roads now have 2x the capacity! Enjoy the new fast roads!
The People: The roads are just as slow as before because they are packed with 2X as many cars now!
So, the paradox is that greatly increasing the capacity of the roads led to the roads being just as slow as before. Maybe even slower. This is because there previously were lots of potential uses of the roads that people did not enact because it would not have been worth the hassle. But, now with 2X the capacity, those uses become viable. So, more people find more uses of the roads up until it gets right back to the limit of everyone patience.
Apply this to coding and you can predict: Coding is much faster and easier now. So, why are all my coders still so busy?
The road thing is usually tied to “induced demand” (which is a bad way of looking at it imo). Jevrons is more directly related to the cost of something dropping increasing the usage because new things that weren’t worthwhile are now doable - related, but more directly tied to things like “smartphones are cheaper now so more people have them”.
You do hit limits eventually (most people get to one smartphone and stop except for replacements) but the surprising paradox is when you don’t even see the possible demand (think: worldwide market for maybe six computers type things) - you have to think of something and then think of what would happen if it was (effectively) cheap as free.
Water in the USA might be an example, it went from something difficult and valuable and precious to we flush our toilets with drinking water - unthinkable wealth to parts of the world even today.
If a smartphone was fifty cents what new uses could be found? If the small shell script that replaces you is now $19 for anyone to develop, what happens?