I think that rate limiting might just force Zenefits to stop using whatever contributed to the high load, and ensure that their API calls are efficient enough.

I think that rate limiting might just force Zenefits to stop using whatever contributed to the high load, and ensure that their API calls are efficient enough. Otherwise, if they really can't do without that volume of calls, then at least they would be locked out in the same way that everyone else is & they couldn't really call it unfair.