Comment by bauruine

If you send 10Gbit/s to an ISP you have to pay for transit to reach it. But if you send 100Gbit/s+ the ISP suddenly is willing to not only peer for free with you but may even host the servers for you in their data center for free. [0][1][2] So yes being bigger can absolutely save you costs.

[0]: https://www.cloudflare.com/partners/peering-portal/

[1]: https://openconnect.netflix.com/en/

[2]: https://support.google.com/interconnect/answer/9058809?hl=en