With mortgage rates hovering around 7% for the last six months and average home prices across the US continuing to rise, the new rules, which took effect in August, had spurred hope that commissions paid to real estate professionals would plunge, making homebuying and selling less expensive for average Americans. Last year, kra32.cc TD Cowen Insights estimated that the new rules could cause fees paid to Realtors to fall by 25% to 50%. Chronic underbuilding has led to a shortage of new homes,...