I'm not an economist but it seems that gazumping and it's evil twin, gazundering (where the purchaser demands to pay a lower than agreed price, or they will pul

I'm not an economist but it seems that gazumping and it's evil twin, gazundering (where the purchaser demands to pay a lower than agreed price, or they will pull out) don't necessarily cause increases in prices over the long term, but instead they increase volatility. When prices are rising, gazumping makes them rise faster, and when the market is tanking, gazundering makes them crash harder. Just my theory based on observation.