Hey MapBox,
I received a message about the new billing a few weeks ago suggesting I should upgrade my JS SDK:

Web: Upgrade to GL JS v1.0.0 (or greater) to be billed by map loads The instead of per tile — for many use cases this should result in a lower bill

And a deadline was set for the change to take effect:

these changes go into effect on November 20, 2019.

I was wondering, what will happen if I don’t upgrade?