Young people have always thought old people are stupid, and rightly so. How many old people needed help just setting the clock on their VCR when you were younger? Now, I'm not agreeing old people are stupid, but to the young the lack of ability with newer tech makes older people seem stupid.
Just like now, the youngster most likely thinks we're still stuck in the old days and why we like vintage. That may be true to some extent, but for the most part it's because this (turntable music reproduction) is our generations tech, we know what we're talking about.
As for the "single" Pioneer table with the bad unabtainium switch you're familiar with, sure things become obsolete, but most likely a donor table could be found. That said, this is the reason so many prefer simple belt drive tables like the AR XA, really nothing to go wrong other than a belt replacement so usually a safe bet.
But keep in mind, the electric motor is one of the most reliable things man has ever invented, most electronics are replaceable, there's really no reason a table can't be brought back into operation other than laziness, or disinterest.
Here are pics of the tables your not POS $300 "new" entry level decks would have to compete against to get my dollars. Again, both purchased for less than $350, the KD500 about four yrs ago, the KD770D about two yrs ago. But I did see and mention to another member here, a KD770D sell on eBay for $345 about 6 months ago. The deals are still out there for those interested and willing to have a little patience and do the due diligence to find one. It's really not that hard, just set your eBay account to alert you when a possible candidate comes up for sale, that's really all it takes.
To compete with either of these decks in the new market would be well over $1000, most likely closer to $2500. Also keep in mind taking inflation into consideration it's really not a fair fight. The new $300 entry level deck would have been a $35-$40 deck back in the day so really not a contender, more in line with the cost of a kids toy table back then. So expecting more out of the deck than what it can deliver is unrealistic.