Why? Begging your pardon, there are items in possession through 5+ generations....We own in the family, a farm since 1886
I know one of the family, after 50+ years of ownership, at least two generations later, and AFAIK unlikely to run out of money, I see no reason they would ever sell......... Several other collections will hit the market first
“Forever” & “never” sound like very difficult, or should I say nearly impossible timelines to validate & verify, but that doesn’t seem to stop some making claims in reference to them.