Quoted from CrazyLevi:It's ok. He did a "search" which revealed there hasn't been a price bubble thread in 4 years, and that there has always been a dire shortage of moronic price speculation speculation threads. Not sure how he missed these though, must have slipped through the cracks of his Sherlock-like investigation:
2000:
https://groups.google.com/forum/#!searchin/rec.games.pinball/high$20prices$20market$20collapse%7Csort:date/rec.games.pinball/gzU8ZAOxvUE/qII_fx4klQ0J
2001:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pricing$20decrease%7Csort:date/rec.games.pinball/3XZf_itbXjY/QI04T4Qr9UkJ
2002:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pinball$20price$20bubble%7Csort:date/rec.games.pinball/8CDhldb5kyw/JxQRQPIGmQwJ
2003:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pinball$20market$20price$20fall%7Csort:date/rec.games.pinball/clAO0zIHHfQ/CbExiOZrldIJ
2004:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pricing$20decrease%7Csort:date/rec.games.pinball/pXZDb-2V6Yk/GSPWq06-nWsJ
2005:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pricing$20bubble%7Csort:date/rec.games.pinball/ACTs0HpQktA/x-C5LZAF180J
2006:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pinball$20price$20bubble%7Csort:date/rec.games.pinball/dBrqPnk7mkk/nQYyh65_fewJ
2007:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pinball$20prices$20fall%7Csort:date/rec.games.pinball/femnxuH8a1k/oeXzsItDbOQJ
2008:
https://groups.google.com/forum/#!searchin/rec.games.pinball/high$20prices$20market$20collapse%7Csort:date/rec.games.pinball/44iMVjwb68o/wXb8-3F9vOIJ
2009:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pricing$20market%7Csort:date/rec.games.pinball/JsgTrS05pCc/8pB5t9oUqTAJ
2010:
https://groups.google.com/forum/#!searchin/rec.games.pinball/pricing$20market%7Csort:date/rec.games.pinball/hNRZGnOAZ-Y/bs8Js1M7sUAJ
2011:
https://groups.google.com/forum/#!searchin/rec.games.pinball/high$20prices$20market$20collapse%7Csort:date/rec.games.pinball/DlcZoruS0Bo/VO_cueyPCEQJ
2012:
https://pinside.com/pinball/forum/topic/pinball-price-bubble-think-it-cant-happen-think-again
2013:
https://pinside.com/pinball/forum/topic/pinball-price-bubble-will-pop
2014:
https://pinside.com/pinball/forum/topic/this-is-not-a-rebirth-of-pinball-its-a-bubble
2015:
https://pinside.com/pinball/forum/topic/we-all-want-the-ass-to-drop-out-of-pinball
2016:
https://pinside.com/pinball/forum/topic/when-will-the-stern-bubble-burst
2017:
https://pinside.com/pinball/forum/topic/are-we-in-a-pinball-bubble
2018:
https://pinside.com/pinball/forum/topic/why-i-feel-pinball-prices-are-going-to-plummet
2019:
https://pinside.com/pinball/forum/topic/will-pinball-prices-come-down-
2020:
https://pinside.com/pinball/forum/topic/prices-dropping-
2021:
https://pinside.com/pinball/forum/topic/pinball-pricing-bubble-due-to-covid-one-nine
I think you are being generous by only showing one example of multiple threads that appear every year.
The economics is simple. You have a near fixed/degrading supply (with the exclusion of new pins in limited themes being built in recent years), and what seems to be a rapidly growing demand as more people are introduced to the hobby. On top of that, unlike many other assets, this is not a one or two to one ratio. I have no idea how many pins the average owner has, but what I can tell you is that for the majority of us the number of pins we desire is "just one more".
There is never going to be a fixed point in time where a significant number of owners either want or are required to liquidate their pins (i.e. a bubble burst) simultaneously. However, I do believe there is an expiration for the hobby, in general. As generations pass in the next few decades to come, I do see the interest in pinball slowing dying out, so to speak.