Several of these -- high end wine / online alcohol sales, travel tickets / private jet rental, high end all-natural pseudo-pharmaceuticals -- amount to little m

Several of these -- high end wine / online alcohol sales, travel tickets / private jet rental, high end all-natural pseudo-pharmaceuticals -- amount to little more than "this business is too risky when normal people are buying, but fine when rich people are buying." Is it just that they can accept more risk when the average ticket price is higher?