Bandwidth is not finite, stop treating it as an exhaustible commodity because its not.
Oh? Then please, please tell me, O Omniscient One, how I find some of this infinite bandwidth. As an ISP, I am currently paying more than $100 per Mbps per month -- wholesale -- for mine. And my customers are currently exhausting it during prime time.
Sounds like you need to upgrade your backend if your users are exhausting what you've got.