It’s not rare but it’s a pain in the ass to purify and transport. Semiconductor place I used to work had a gigantic 1000 gallon tank of the stuff they had to get refilled every month. Had to have some specialty chemical tanker truck it out. Then there’s problems with icing your whole setup once you actually have the stuff and try to use it. It’s less of an immediate fiscal strain and more of an expensive infrastructure problem.
As a welder, much of my work straddles the line between art and mass production. I’ve made many, many beautiful welds that will never been seen by another person for at least the next 20 years, if ever. Some of the best that come to mind are stainless steel welds on industrial equipment that get buried under paint or insulation. I spent 3 years welding parts for US battleships and Navy cruisers as well as the occasional weird airforce part. Most of those welds will never been seen by living people after leaving my old shop.