I agree with charging the "appropriate amount", but that's not what AWS and the other hosting providers are offering though. They are offering you a price that is vastly different than what it actually costs.

Instead hosts like Hetzner and OVH uses a price closer to the true cost for bandwidth for their users. Take a look at their dedicated hosting and the pricing. I'm not sponsored by either, but I am a happy user of Hetzner.

Check out this talk by Kyle Drake that goes more into the details of bandwidth costs: https://www.youtube.com/watch?v=-i6wvix6buI

I've been renting servers at Scaleway Dedibox (formerly Online.net) for years, with free unlimited bandwidth. I can be pretty bandwidth-intensive for a few weeks at a time (eg. rebalancing a storage cluster) and never had any trouble.

Paying for "unlimited" data transfer no real detail on the bandwidth is pretty bad.

Unmetered bandwidth is reasonably real.