Then how is it that businesses always seem to do better after city streets around them are pedestrianised? For me 1/4 and 3/4 is the wrong balance, as it's too

Then how is it that businesses always seem to do better after city streets around them are pedestrianised? For me 1/4 and 3/4 is the wrong balance, as it's too car friendly and makes no mention of trams and light rail.