Raul,
I completely agree with your sentiments. I used to curse under my nose for a few seconds, then slap the periphery ring on the newly acquired warped record, and move on. But after experiencing, record after record, new vinyl being warped and pressed off center, I've decided I will contact the record company to express my discontent, disappointment, and disapproval. I still want to support the vinyl revival by buying new records, but I agree with you that perhaps not buying might just be a stronger statement.
I think this issue is critical as vinyl has been seeing an unprecedented resurgence. Seems to me, almost all of the discussions on the topics covered in the analog thread are just about irrelevant if the vinyl record that is at the very center of music reproduction is warped and/or pressed off center. Is that Schroeder or Durand tonearm, Atlas or Anna cartridge, mounted on an SME or Caliburn, to use extremes, going to perform to the maximum of their potential if they have to play warped and off-center records? A flat, perfectly centered record is the baseline without which any comparison or evaluation is just about useless. And yet the record companies shamelessly pretend to embrace and promote vinyl playback when they are really in it only to cash in on the revival with the lowest possible cost to them, and in reality don't give a damn about the quality of both the sound and the pressing. It really makes me angry as a vinyl enthusiast and a consumer.