There's one big change that you are not considering there: the _rate of change_ is greater than ever before. In the past, if someone invented a loom, then a bunch of workers unable to learn the new skills would be out of work and replaced by (mostly younger) people who had grown up with the new technology. This was a problem for about half a generation, during which the younger people could support their out-of-work relatives.
Nowadays, the new skills come and go at a much faster rate. The 16 bit assembly programming skills I learned as a kid about a generation ago are almost useless to me today (in the sense that everything I _need_ to know about low-level programming I could have learned from C). Imperative programming, the way I learned it, is considered largely obsolete by today's vocal OO majority. The APIs I developed against in the late 90s are dead and buried, subsumed in wrapper APIs that one should use instead (who programs directly against xlib these days?) or evolved into entirely new forms (such as OpenGL). Sure, the core Unix APIs are still alive (and so is XML, sadly), but the vast majority of APIs, languages, tools, and hardware from the last few decades have gone the way of the dodo. Compare that to the small number of technological advances we saw in centuries past.
Now, I'm not complaining-- many of these changes were for the better, and even the ones that weren't are likely to be superceded by better ideas within the next couple of years. But note that at the same time at which we see this unprecedented rate of change, poverty statistics show that the gap between rich and poor is growing at similarly unprecedented rates.
Yes, this is merely correlation, and it shows nothing. For all I know it might just be that TPTB have become more effective at making people docile and exploitable, or that laws and legal practice have gradually become so complex and expensive that the privilege of freedom has become even more exclusive than it used to be.
But I'd like to think that the increased rate of change is a strong contributor to that change in poverty rates, if only because that is one thing that I see some hope for, via improved education and better tools.