Let's not forget that market conditions back then wouldn't have justified very high density here, there, everywhere. Things weren't always like the abnormal situation post 2010.
edit: and it's not like it's the planners' fault. They simply review and comment on whatever the proponent submits. They can't magically alter the proponent's pro forma.
Again, it's whatever was the most profitable for the proponent given then current market conditions.
A point tower on a 10,000 sq.ft. lot likely wasn't profitable back then. Hell, it's not really viable even to this day in most areas.