Wealthy rock stars hoarding vintage instruments...

More than 70 years ago, Gibson Guitar Corporation manufactured their first solid body electric guitar and with the help of musician Les Paul, they released several different models in his name.
Competing with Fender who bulk manufactured basic guitars on an assembly line, the Gibson Les Paul model had more hands-on craftsmanship. Select flamed maple front, decorative binding on the body and glue-in set neck (as opposed to bolting on a Fender neck) were the most significant visual differences. Another difference were the pickups. Fender used single coil pickups that were subject to interference or 60 cycle electrical hum. The Gibson pickups named Humbucker had dual coils inside a metal shielded case. Some of the early pickups were stamped patent applied for, later known as PAF were the most sought out style of that era.
So the combination of design, wood, hardware and electronics, adding limited production has made those models difficult to find and extremely valuable.
Unfortunately, collectors... players or not, scoop up these guitars whenever they can.
Guitarist Joe Bonamassa will go through pawn shops looking for vintage Les Paul guitars in the cities where he is performing.

Last year I saw a video of the guitar collection owned by Rick Nielsen of the rock band Cheap Trick. He's got many different brands and models and remembers every purchase.
According to Wiki, Nielsen has owned about two thousand guitars over the years and currently has about 500 instruments.

I believe he's got a museum for viewing and sometimes does shows of his favorites.

Here's a 5 minute version for an online music company name Reverb: