Small parts like bolts are standardized, but things like car parts that easily could be aren't. Car manufacturers fight tooth and nail to block third party suppliers of spares for their cars. It will always be like this because most car manufacturers make very little profit from cars themselves. All the money is in credit fees and aftermarket care and servicing. If you can control the market for that you make a lot more profit.
This is true for cars, electricals, furniture ... everything really. It's only the very simple base elements that are standardized.
This is true for cars, electricals, furniture ... everything really. It's only the very simple base elements that are standardized.