> Pricing relative to your rank as a percentile has some weird properties, one month you might be in the 99% then next month it cost you big $$ in the 1% with exactly the same traffic.

Yeah, it seems like one thing that could happen as a result of this is that the current top 1% of users will leave the platform, creating a new top 1% from the people who used to be the top 2%. Then these people will probably leave the platform as well, creating a new top 1%, and so on. It's a nice algorithm for getting rid of your most successful creators.