in my case my application does not use pagination, it uses infinite scroll, even if you had a million devices that use google chrome, they would all load page 1 and if that req/minute progressively decreaasing thing is implemented, once they start scrolling endlessly they would all hit the rate limits sooner or later, the thing is a human is not going to scroll down a 100 pages but a bot will. once this difference has been factored it, it wont matter how many unique devices they bring into the battle