Power abhors a vacuum. Choosing to not change is viewed as failure to innovate, even if the design suffers. Planned obsolescence is as old as the concept of yearly production models themselves, and likely older, going back to replacement parts manufacturing and standardized production overtaking piecework.
It’s a race to the bottom to be the least enshittified versus your market competitors. Usability takes a backseat to porcine beauty productization.