I am not a complete fan of Tainter's "Complexity is Death" meme, but he is extremely popular in the doom and gloom crowd, so I felt that clear signs of his thesis should be reported on.
Fast-food drive-thrus are getting slower
Bruce Horovitz, USA Today, 30 September 2013 (hat tip: MR)
Never mind that its first name is "fast." The amount of time that consumers are spending waiting in lines at fast-food drive-thru windows is getting longer, not shorter, mostly due to the growing complexity of new products that the major fast-food chains are selling.
In this case it is competitive pressure that is making the menu more complex. I don't think that is one of the drivers that Tainter includes within his causes of society becoming too complex for sustainability, but complexity is complexity.
Since one of my complaints with Tainter is that he offers no measurable benchmarks, its all faux-precision as far as I can tell - maybe we finally have something to measure.