Complex sentence: With the mob now out of power, the old casinos are demolished and purchased by big corporations, who build new and gaudier attractions, which Sam laments are not the same as when the mafia was in control.
Split into simpler sentences: With the mob now out of power, the old casinos are purchased by big corporations and demolished. The corporations build new and gaudier attractions, which Sam laments are not the same as when the mafia was in control.