[metaphor]

I wouldn't say blame in the sense that it implies fault wherein consumers had reasonable expectations to not exist. The 15c was clearly limited production targeting a very niche market (professional scientists and engineers of a certain era). The dubiousness of its release was in the sheer number of them being immediately relisted at super-inflated prices on zero-day.

History tells us that HP made a very clear investment bringing the original 15c to market; it's their IP and their prerogative. I simply can't find reason to fault HP for their business decision, which was likely driven by overall product relevance than cannibalizing sales; 33s and 35s were the only other RPN scientific alternatives at the time, and they're both quite distinct from the 15c. In today's age of touchscreen smart phone proliferation, affordable licensed emulators[1][2] which scale to screen fill that void elegantly...unless you're a modern 20-something-ish Luddite like myself and still don't own a smartphone.

[1] https://play.google.com/store/apps/details?id=com.hp.hp15c15...

[2] https://itunes.apple.com/us/app/hewlett-packard-15c-scientif...