In light of current economic, and the business climate of the television industry, a show of this nature would not likely be able to be produced again unless it were an HBO or Showtime Mini-Series (which ironically, it appears to have ended with just 9 episodes, less than the typical 24 episodes many produced dramas.
"A transient and fickle commitment from the networks" is an apt way to describe television executives motives. In their defense however, they are merely businesses seeking to maximize costs versus revenues. And the costs for the Peacemaker, with the sets, props, horse wranglers/horses, a small stable of extras, and all those costumes must have cost a fortune.
The age of the western on television may have seen their day, as it sets on the genre' that once had 30 Westerns on television in the 1960's. Cheap, youth oriented and cost conscious shows seem to prevail into our murky programing future. Perhaps after audiences become weary of shows recycling story ideas/plots of our present whimsical era of flash, fast and furious, we might gravitate back to a more pure, distilled brand of storytelling.
I enjoyed "Peacemakers" showcasing the debut of new technologies, and how they show the relevancy by integrating them it into the story. I also find how most of the characters resistance to technology is met with fear and uncertainty.
Let's hope that the Television Western will not become extinct. The Western is as iconic as who we were, and hopefully who we still are as Americans; individuals who always seek to go west to find something we have not yet found.