> That said, usage tiers (where you must pay more if your website gets a certain # of views/month) seem ubiquitous. I think these are ok
Why do you think that's ok if you don't mind me asking? I worked on sites that used to generate lots of views but made 0 money because were not designed to be commercial projects. Why should I pay more money for a digital asset just because my site gets popular? It's not getting popular because of the font. Can you imagine if a CMS started charging you more money if your site becomes popular? What difference does it make to them? I just find it baffling.