Tools and hardware are an interesting thing to look at when thinking about how capitalism works in general because marketing and product development are so much less of a factor in determining what people buy. Of course every screwfix catalogue you see has new stuff in it, and the very fact they keep sending you the damn things is proof that there's a marketing department somewhere, but ultimately people buy hammers when they need hammers. Most people won't buy more hammers than they need in order to gain prestige or for the sheer thrill of buying a new hammer, and the basic design of a ball pein hammer has been the same for a long time and isn't likely to change much. Anyone who can use a hammer at all can probably cope with replacing a broken handle rather than the entire hammer.
Your typical independent hardware shop doesn't do promotions or advertising, they just sit there safe in the knowledge that people will always need hammers, and people with hammers will always need nails. This is how we should assess the usefulness of everything our society produces, are there lots of people trying to convince us we need this thing, or did we figure out for ourselves that we needed it? If advertising didn't exist, if people weren't inventing products for which there is no demand and then manufacturing the demand for them after the fact, would this thing you're making or selling still have a place in the world? And would we need to make so many of them, or could we make fewer of them, but ones designed to last?
Capitalism doesn't allow these kinds of decisions to be made. There must always be new things. New things require the removal of old things, so the sooner the old things are old the better. Hence those deliberately shit and yet costly iphone chargers. Or iphones in general come to think of it. Tools are a refreshing antidote to all this because the value a decent tool increases with age, as its list of accomplishments gets longer and its owner's faith in it grows. Tools are good things to have because their value comes not from the fulfillment of a desire at the moment of their purchase, but the fulfillment of a purpose that comes from their actual use.