I honestly think this is a difficult and fascinating question. This is like the dark energy of software cosmology. Why is the natural state to get larger and more complex for un-proportionate pleasure of use?
Largely, I think, because devs are given too powerful computers. It's easier for companies to "fix" or preemptively had off performance bugs by giving developers high-end computers than to spend extra development time truly fixing them.
Largely, I think, because devs are given too powerful computers. It's easier for companies to "fix" or preemptively had off performance bugs by giving developers high-end computers than to spend extra development time truly fixing them.