Specifically, most of these beers contain high alcohol by volume, or ABV, contents. The End of History, for example is a 55% ABV beer -- higher than most spirits. But the lack of carbonation in many of these so-called "sipping" beers stems from how they're brewed, and not because the brewer wanted a beer without bubbles. A beer's carbonation comes naturally as a byproduct of fermentation, as the craft beer style guide explains, and there's a general correlation between ABV and carbonation.
"As you get higher in alcohol, you get less carbonation," Brewer's Association Craft Beer Program Director Julia Herz told Thrillist. "Of most beers in 140 beer styles we track, the majority are less than 6% alcohol. [The beers in Bloomberg's article] are experimental beers and not a common example."
Herz went on to point out that most of the beers mentioned were more like ways for brewers to flex their beer muscles. Or, better stated, their innovations in brewing, such as cask-aging and freeze-distilling. But there's a rub with all these beers: they're exorbitantly expensive for the producer and consumer. Utopias, the most widely available of these beers, costs $200 per bottle.