and from what you have posted, I believe you agree.
Sure, and to be picky (as I actually am ) tcp/ip is a "generic" network data transmission protocol, whilst http is just one one of the application layer protocols supported by it:
or, if you prefer, it is only a very small subset of possible tcp/ip "traffic".
The "fluffy" article initially mentioned is related to hardware compression:
Companies that offer WAN compression often add other capabilities to their products, including bandwidth management capabilities and quality of service (QoS) features. Note that no WAN compression standards exist to simplify interoperability. Consequently, equipment from the same WAN compression vendor must be used at each WAN endpoint. Interoperability among different vendor equipment in the near future is unlikely. Most of these vendors, including many of the start-up players, have patented technologies that they believe differentiates them from their competition.
and is essentially a collection of truisms, of course compressing data means that less packets are sent through the network to transmit the same amount of data, and this means that more data can pass through the same connection, same goes for optimizing protocols and employ effective caching measures.
In any case the article mentions explicitly:
Another technology employed for WAN compression is caching. This is different from web caching. Web caching captures pre-compressed static objects and delivers them to users from caching servers distributed throughout the Internet. Web caching solutions are effective on the Internet because it carries a tremendous amount of web traffic.
However, enterprise network traffic is quite different. Although web applications are present, they represent only a small fraction of all traffic. Other traffic is devoted to a wide range of applications, including services from SAP, PeopleSoft and Siebel; ERP and CRM; and hundreds of other applications. Traffic may result from file transfers, program downloads, the transmission of media objects, streaming media, and even VoIP.
how web applications (please read as http) are considered only a small fraction of the actual tcp/ip traffic.