Not all is what it seems!
Back in my early days as a Sys-Op operating Wang mainframe controllers and Unix systems for a well known commodities company we used to experience similar bottlenecks. Renting data from the NYSE, Tokyo etc, over satellite at around $1 per second you can imagine data was super expensive in 1987, that data landed on our network as jobs and we were tasked with backing up our jobs to 9 track tape (yes those big massive reels you seen spinning back and forth in films). Problem is even though we were at full capacity the data was coming in to fast for native 80mb tapes (yeah those tapes stored around 80mb native) and bottlenecks. Now these were the days of thicknet AUI and token rings. So if you went to the loo and a backup job finished and you took 10 minutes for a sit down job thats 600 seconds that your satellite at $1 per second is costing. Needless to say the Sys-Ops worked 24/7 - 365. Bottlenecking also cost around about $300 an hour roughly until Compaq QIC cartridges came along and 9 track went obsolete in weeks as the QIC was better , higher capacity and more reliable storage and a damn sight smaller and could be dispatched by courier and bottlenecks went away and had also developed later to auto loading so no need to rush back from the bog. We’re talking about commodities worth millions of Yen and dollars so the cost had been factored in..... $5000 was pretty much the cost per day and yet we haven’t moved on one bit!!!!