Many significant social changes occurred following WW II.  Better acceptance of Chinese, reflected by the repeal of the 1882 Chinese exclusion act, opened avenues to professional careers for young educated Chinese who no longer were relegated to taking over their family cafes.  The pioneering Cantonese restaurants were losing their novelty and some jaded non-Chinese diners sought new tastes which they found by the 1960s in northern China cuisines such as Hunan, Szechewan, Peking, and Shanghai. The old mom and pop restaurants faced new forms of competition from other Asian cuisines as well.  Chains, fast food franchises, and corporate owned and managed Chinese restaurants further speeded up the end of the family-run Cantonese restaurants by the last quarter of the past century.