Self-fulfilling thesis seems everywhere.
Housing – rising home prices -> more people want to buy; banks willing to lend more -> more people can buy -> higher home prices..
Liquor/baijiu (Moutai) in China – buy Moutai stock & Moutai liquor-> Moutai will rise in value over the years (due to inflation etc. and company may raise prices) as an “investment product” -> you can even take “equity/cash” from the liquor you bought -> you can buy more Moutai or Moutai stocks -> excessive demand will drive Moutai price & Moutai’s financials thus stock price shall go up -> investors make profit on stocks and can buy more Moutai or Moutai stocks…
Tesla – buy Tesla stocks & put down reservations -> stock price rise due to higher demand -> use profits from Tesla stock to buy real Tesla cars, which can contribute to Tesla financials -> stock price rises… This may work well at early stage when volume is low.