yes, but will you perform streamingPull? Is only Pull enough?

Anyway, if you reach the 72k limit in streamingPull with a large number of messages, you will be welcomed by a Google Cloud representative (Sales, Customer Engineer, TAM,..) who will help you to go over that limit (maybe a soft limit) or to design a much more efficient app.

(because you will spend a lot on the Cloud and Google will help you in your efforts)