Is this not “the market” deciding it doesn’t want to entertain this business? As a society it’s totally reasonable for us to draw the line at intolerable behaviour, we’re not obliged to put up with platforms that enable hate and vitriol, just as we don’t tolerate violence in the street.
If a business closes because nobody is interested in buying their products, or a club disbands because nobody is interested in joining, or a pub bars a patron who’s starting fights and nobody blinks an eye. The same thing happens on the internet and suddenly it’s the end of the world.