These features do matter to consumers. What consumer wouldn't want a vac that can be fixed easily by putting a new fuse in a socket? The issue is the consumer

These features do matter to consumers. What consumer wouldn't want a vac that can be fixed easily by putting a new fuse in a socket? The issue is the consumer doesn't know about this possible fix. The Company Engineers this fact into the product AND into the marketing and into the warranty length. Common sense. A human is irrational and lacks knowledge, but a human made aware of his irrationality will usually choose the rational choice. Companies are just taking advantage of a consumers lack of knowledge, awareness, and intelligence. If you were perfectly aware of two competing vacs and all the actual technical specifications of course the one with a replaceable fuse would be counted as a positive feature. The problem is that companies that try to market the fuse as a feature will have a hard time communicating this fact to the consumer especially. Thus it is in the interest of every company to engineer shorter lifespans into their products as consumers can't see past 2 years at the point of sale. Industrial products on the other hand are usually massed purchased and reliability is measured from an accounting perspective. This makes industrial owners more knowledgeable and able to make more rational choices as they have quantitative metrics that effect their profits during accounting time.