I planted these trees about 23 years ago. I find the garden provides my best metaphors. The sunburst on the right is rangy, takes up lots of sunlight and needs to be cut back - hard - every few years.
The golden elm has never needed to be pruned but has simply taken what it'll get. Still a majestic tree the golden elm has allowed the dominant sunburst the centre and has still grown tall and beautiful.
Nature finds a way.