Well, there definitely is bandwidth scarcity. Also, unmetered bandwidth is just one major reason botnets are so trivial. Nobody knows or even has incentive to know that their smart toaster is involved in DDoS attacks so now we're all centralizing behind Cloudflare to mitigate this reality.
Now, I'd like to see a fair price per bit, but I'm not convinced the world is better without it.
ISPs are increasingly charging for total throughput on top of point-in-time bandwidth, though. For example, to get actually-unlimited throughput with Comcast you have to pay an additional $50/month: https://www.xfinity.com/support/articles/exp-unlimited-limit
Now, I'd like to see a fair price per bit, but I'm not convinced the world is better without it.