Computer software is on the chart as getting cheaper with time but that can’t be right? I remember Photoshop used to be a disc and you owned it for a reasonable price and now you subscribe to the Adobe protection racket. Software as a service would be a service which should go in the top of the graph with other extortionists like colleges and hospitals.
Well there are other examples, eg Google Docs is free, no need to pay for Office.
I don’t know about the aggregate data tbf
The reasonable price was $600 in 2000 which is over $1000 adjusted for inflation. That's four years of subscription, the useful life of a perpetual license may not be much more than that.