I love the hand drawn chart. Apparently "Open Source" was invented around 2005, which significantly reduced development cost, then AWS was invented in 2011 or so and made development even cheaper, but then, oh no, in 2018 "complexity" happened and development became harder!
AI drawn chart and AI written article
In 2018 We had kubernetes, which improved the development speed another 300%!
I don't read this as when open-source was invented, but when it happened for the corporate world. In 2002 it was a very reasonable choice for $BIG_COMPANY to use a proprietary web server, e.g. IIS. In 2008 that would have been really be weird.