I would have to disagree whole-heartedly. The problem is not with consumer electronics necessarily. The problem is with the consumer! Believe it or not, there ARE lots of wonderful electronics today that are built like absolute tanks. The issue is that most people aren't willing to pay for them. I have a Yamaha A-S2100 that I'd bet money any vintage fan would appreciate. Massive power supplies, huge caps, solid metal knobs, weighs a million pounds, has old school analog vu meters in that soft golden light. Sounds amazing, loads of power, and I'm willing to bet will last many decades of dependable use.
It seems pricey (it is), but when taking inflation into account it is no more expensive (actually cheaper) than its equivalent in the 70s. Back then, it seems that every middle class Joe had a nice hi-fi system in their home. I grew up with a proper Pioneer and a pair of giant towers, and my parents weren't even that huge into music. Now that the emphasis at homes has gone from big sound to big screens, too many consumers gasp at the thought of spending more than a few hundred bucks on audio.
I say this with authority as I owned a retail home theater store that I recently closed. Despite my love for my high end gear, I sold precisely ZERO high end Yamahas but a boatload of budget AVRs and sound bars. Despite my educating people, doing awesome demos, and them seeing such a drastic difference in quality and sound, 99% of customers just want the cheap stuff. SSSSOOOOO many people would comment about how "They just don't build stuff like they used to." At which point, I'd direct them to my middle to higher end gear, where then they'd balk at the price. Can't have it both ways folks.
Anyway, just thought I'd chime in because this is a very common misconception. They DO build stuff like they used to. You just have to pony up for it...just like you had to in the 70s. It wasn't cheap then either. That and you need to not bother with places like Best Buy/Wal-Mart/Target which are understandably all about high volume/low profit stuff that they can sell tons of. I.e. cheap consumer garbage. Go visit your local, proper home theater store or mom & pop audio shop. That's where it's at.