An elevator is not like most other things a building owner buys. It will carry people every day for decades, it is tied to safety rules, and it needs service long after
Most buildings can be well served by standard elevator configurations, and there is nothing wrong with choosing a proven, off the shelf setup when it genuinely fits the space and its needs.
When people think about elevators, they usually picture the cab itself, the doors, or the control panel. What rarely gets talked about is everything else that keeps the whole system running safely