Unfortunately, even if we tried to co-exist peacefully with sellers, it just wouldn't happen. The constant warring across the multiple games and platforms has created an almost religious hate between players and sellers, and I think that anybody who starts to sell has already acknowledged this. It's difficult to revert feelings of angst that have carried on for so long.
Well its funny, really. On my WoW server the horde side was run by a couple mega-guild (500+ members) from pervious forum communities. Instead of declaring war on the gold sellers we bought them a guild (linkshell) and tabards, (Name was One G One G One G, inside joke.) not only did this help us identify them, but they have always been pretty amicable ever since. They keep to their little corners and farm 24 hrs and we do our thing. Theres no real competition with them, no need for it.
If you want peace you gotta work for it. I'm gonna say without a doubt the quetz community will never reach a state of peace witht he sellers. Its gone too far and too much spilt blood. However in other games and places there is definately hope.
You might say why have peace, they are cheating and helping others cheat, it ruins the game blah blah whine whine, but this 'war' helps no one either, and violence begets violence as it were.