The Luddites were skilled laborers who protested technological change that made it possible for their work to be done by a larger subset of the population, spreading the wealth formerly concentrated within the Luddites.
Today's technological change is making it possible for many people's work to be done by an ever-smaller number of people, concentrating the formerly distributed wealth in their hands.
It seems to me that the technological change during the time of the Luddites was helpful for most people, while the technological changes occurring today is nearing a point where it is no longer helpful for most people, with respect to employment/unemployment. Sure, there will be 'new forms of commerce' etc. etc. but if the unskilled labor does not have the training/hardware/human-network-access to participate, what does it matter?
rollypolly has a good point below that birth rates dropping can counteract this shrinking of the number of 'jobs' available. It's a perverse situation - can we die fast enough so that our jobs/roles are released to the few new people being born?