That’s only the incentive if they’re recluses living in their last house. Many such cases. But if they own a $500,000 house and want to sell it to buy a $750,0

That’s only the incentive if they’re recluses living in their last house. Many such cases. But if they own a $500,000 house and want to sell it to buy a $750,000 house, then a 10% increase in house prices costs them $25,000 net. Limited supply limits their options. They’re less likely to find a perfect fit and more likely to have to compromise.