For products in general, i think this really dates back to when certain countries had a good reputation for making certain products, Germany - Cars, Japan - electronics etc, companies and workers took pride in their work and it wasn't all about maximising profit, not sure it still the same today. Today is all about profit, using minimal workforce, cutting corners where they can, outsourcing the supply of parts/materials to low pay & condition countries like China, India, Bangladesh etc. Some companies still make quality products, but as you say, that can't be attributed to 100% of companies these days, for a variety of reasons.
I saw Simon Iles mention the other night, and this is kinda similar to the "because it's got a certain name or from a certain place it has to be quality", that Beldray are doing some special things to mark their 150 year anniversary next year. Thought to myself how can you celebrate your 150th birthday when the present day Beldray is only approx 10 years old, it has no connection to the old Beldray (apart from acquiring the name, second hand, approx 5 years after they closed down) which went out of business in 2004, the products are now 100% Chinese where as they used to be made in the West Midlands. But anyway here we have a company, retailers etc claiming quality because it's made by Beldray, and Beldray have this long reputation for quality and innovation, yet today's Beldray has nothing to do with that history or reputation.