Morality proves weak motivation for most individuals. You refer to the 'quickening pace' of progress in communication, efficiency, and (destructive) technology
http://forum.knot4prophet.com/viewtopic.php?p=206&highlight=#206, yet you fail to give capitalism its share of credit in these accomplishments.
While capitalism depends to some degree upon selfishness, this seems an oversimplification. Capitalism relies upon individuals to act in their own best interest. This interest is not inherently greed. In a capitalist society, the rich make up a small percentage of the population. "Small" businesses far outnumber the large corporations. These small businesses arise from the entrepreneurial ideas of individuals. Most business owners earn merely enough to support a reasonable standard of living for their family.
These businesses are often responsible for innovation. Apple/Macintosh corporation started out as two geeks who were fascinated with computers.
http://en.wikipedia.org/wiki/History_of_Apple Their hobby led to the development of computers that individuals could afford. The impact of affordable computers is obvious, particularly if you contrast a society where there are few personal computers with a society where home computing is the norm. The disparity quickly translates into differential learning and productivity; which, in turn, translates into improved standard of living for the technical society.
While the improved standard of living could be dismissed as the fulfillment of 'selfishness,' return to evaluating the society with fewer computing resources. This society's members will most likely be barely subsisting. It is likely that the members suffer from poor nutrition, work long hours, and receive inferior medical care. The members of the more technologically advanced society may have extravagances that are unnecessary for sustaining life, but the alternative is not a fate many would choose.
Companies do sometimes grow so large and powerful that their operations become detrimental to the environment, to individuals, to competition, and even to freedom. Can you point to another system that done better for society? Perhaps even a system that has fostered more innovation?
Various forces work counter to the ideals of democracy and capitalism & give rise to undesirable outcomes. Humans have yet to find a solution. This lends merit to your hypothesis of quickening societal suicide.