Do you have numbers or papers that support your argument? That these applications are bottlenecked by the network?

There is a 2015 paper [1] that argues that improving network performance isn't gonna help MapReduce/data analytics type of jobs much:

" .. none of the workloads we studied could improve by a median of more than 2% as a result of optimizing network performance. We did not use especially high bandwidth machines in getting this result: the m2.4xlarge instances we used have a 1Gbps network link."

Granted things might have changed by now, but I am curious to see how and by how much?

[1]: https://www.usenix.org/system/files/conference/nsdi15/nsdi15...