I’ve never understood why manufacturers of artificial Christmas trees do not sell half-trees or three-quarter trees.
Take a Christmas tree and cut it in half, length-wise, so that it can be placed flush up against a wall or in the corner of the room, which is what most people do anyway.
Hardly anyone decorates the back of the tree, or does a very good job with the back of the tree unless they are putting it in a window or have a huge room that allows them to put the tree away from the wall.
Three quarters of a tree would work for when you need to put it in to a corner.
If they start doing this with real trees they could sell them at a discount (doubtful) but would only need around half the trees to fulfil their customers’ requirements.