Honestly, I think FDM is not the future of 3D printing.
Stepping back though, I am thinking of the hundreds of computer companies that have come and gone. There were some very big names that stepping into the PC business at the time as well as others who were big in other areas who moved into this field trying to position themselves. They ran on the potential of the market, not on how to make it happen or on what it would look like. The ones who moved on were the ones who saw the growth market. Altair, Sym-1, Aim-65 were for hobbyists. TRS-80 was one of the few who had it right, but they were early to their window. (I'd argue that Radio Shack was a much, much bigger name then than Dremel is now for the kind of stuff you're talking about. ).
FDM produced parts on this class of hardware is, to be frank, rather crappy. There are over 200 printers listed on 3ders.org and I seriously doubt more than 10-15 will survive the next 3 years and that does match the weedout of the 1st generation of PC manufacturers. (Granted, there were a lot fewer as the barrier to entry then was much higher, but almost none had the engineering and market position to move into the PC clone market. It was not IBM taking the business market that killed most of the 1st generation as much as the fact that they created what amounted to a industry standard that very few were positioned to exploit or have viable alternatives for income. The standard that will need to be met going forward into the second generation of the current 3D printer wave is appliance like behavior with good part quality).*
The main difference here between then, and now, is that major players in the 3D industry are not sitting back. They are very active and have a huge backlog of patents to draw on. HP is already out there with its business class 3D printer. Dremel priced their printer at exactly the same price as the 3D Systems Cube 3 and has almost the exact same specs.
*A discussion for another day. I would be very interested to see if there is any correlation on who survived and who could run Lotus.