I think that it could be very plausible to say that "it feels more like the venture capital IPO machine is in full force just to crank up the IRR on their funds", but I think that you are missing that the powerful thing about personal computer wasn't that everyone would do the same thing (I suppose it was general computing calculations), but that people were free to explore many different things (solve individual pain points) in the same way 3d printing will (I think it may be even more than that but I'm limited by the contraints of my own insight into potential future applications[imagination] at this time).

I guess if you even look back on the origins of the personal computer, people gave very narrow reasons for its use and failed to make the connection to how it could be valuable outside of those reasons (outside of the angels/venture capitalists and entrepreneurs).