I've seen licenses where you pay per CPU on the server(s). What does that even mean if you serve the font using something like S3? And if you use a CDN, do you

I've seen licenses where you pay per CPU on the server(s). What does that even mean if you serve the font using something like S3? And if you use a CDN, do you have to pay for the CPUs at the edge too? Unreasonable licensing for web fonts results in companies not buying those fonts.