Since CS6 is new, we all have about 18 months or so to consider our options and any further developements in Adobe policy, before the release of CS7 looms. Adobe has also stated it plans to standarize it's release timing (2 years).
What does a 36 exposure roll of color print film cost these days to shoot, and develope?
Kodak Porta 400 Pro is $40 for 5 - 36 exposure rolls, about $0.22 per shot, and another $0.20 per frame for developing. Add another $0.15 to have each photo scanned onto a disc.
That's $0.55 per frame of film.
But lets ignore the post processing for the moment and assume someone bought Photoshop CS5 at retail and upgrades to CS6 at upgrade pricing, $898 in total. We'll further assume CS5 and CS6 cover a 4 year span.
So $898 divided by a $0.55 per frame film cost = 1,632.7 frames of film are equal to the cost of CS5 and CS6.
1632.7 frames of film divided by 48 months = 34 frame of film per month.
Of course, Photoshop is a digital darkroom, so the real comparison would be to the costs of operating a wet darkroom for 4 years, minus the cost of the film itself at $0.20 or so per frame before developing. (Tri-X B&W film could be as low as $0.10 per frame)