After a trend within the counter-culture matures to be a trend within the sub-culture; and when the trend-spotters pickup upon the trend as something ready to, "go forward," into the mainstream it is mass-marketed in the name of capitalism. Mass-marketing involves cost-reducing the target product to the point where the asses of the masses can afford to buy it, without loosing the item within the trend's overall, "feel." And now, better learning through examples: