How about this theoretical scenario?
A sponsor designs rather a rather low-mintage series, enough to get collectors and investors to buy in based on
Low Mintage rarity.
Then each year, they slightly change the design... And lower the mintage... Until the last years where
a frenzy of sorts builds for those collectors who have bought in, invested heavily, and find they are spending ridiculously high amounts in an effort to complete their series?
Game of "Musical chairs", anyone?