Sofas don't need constant bug fixes; they don't inexplicably stop working when someone upgrades their apartment with a new TV. Also, the up-front cost of a piece of furniture is a couple of orders magnitude higher than most apps, which help keeps the retailer in the black until it's time for the customer to buy another, similarly high priced item.
> If the thing needs updates or changes regularly say once very 6 months....due to changes in standard or just keeping things updated....this stuff costs money to keep developers paid.
The problem is of course, that the industry has settled into a nash equilibrium of constantly changing things, so regular people have to continuously update software, as a way to charge rents, on top of whatever productive improvements they provide.