I think it's false, and a huge mistake. There is rare cases, but not plenty. Video games (I mean video games for core gamers) are products that demand first and above all quality to be successful. There is rather plenty of common games with a huge quality which become hits (Kingdom Rush for example or Starcraft which was finally kind of common in its time). One of the rules in the delovepment process at Blizzard is that they ship a game when it has less than 100 known bugs. Also, I would add that, it seems that, ID software did not make a successful games since Doom. Quake wasn't a commercial success, Quake2, Quake3, Doom3 and Rage neither (that's why ID software has been bought for only $100M). After all, ID Software lost one of its core value co-founder a long time ago (John Romero) who was responsible of the gameplay of ID's games...
Quality in video games are everything, that's really my opinion. It's also really an edge for every indy developper which want to start a company in this sector, cases are countless.