They're only raising the prices of customers whose servers use more than a terabyte per month. Based on my experience, it's not easy to go over a terabyte of bandwidth for most web services. I doubt the majority of their customers will see any change in price.

Sucks to pay a dollar per terabyte extra if you're downloading a petabyte per month through your hetzner VPN, but this sure beats raising everyone's prices because two or three companies decided to use Hetzner to build a CDN.

This is why you can't offer unlimited anything, and why we can't have nice things.