That's true and you can update firmware, but if the electronics are limited to an older format or spec, then you reach a dead end eventually and it needs recycling, unless you are happy with the current technology. I've not owned a TV for 3 years and I'm in no rush to get one, with the expense, bulk, enormous range of panel technologies and standards and issues with burn in and reliability. I watch stuff on my 34" Philips screen, supplied by work and it looks great.
There is a desire now to be retro, but that's fine if using modern materials and designs. That's why the Mission 770 are a great product. I don't know why many people still have vinyl and this cassette thing does confuse me. I love modern things, if they are genuinely useful and reliable.
I won't be looking at anything with 40 or even 50 year old technology. I've changed my mind about buying a new Leema amp, using new technology. I can't justify the expensive and have other financial priorities. Hopefully the kit I have now will last a few years. I might not replace it, if it does fail. I had become a slave to modern technology and I won't buy stuff now, unless I do need it.