It's good that you're questioning
...but as an engineer, it's disappointing that people don't appreciate the work of engineers. It isn't easy or cheap to design and manufacture an iPhone ... and it isn't easy or cheap to design and manufacture a ski boot.
Considering that ski boots require high tolerances for measurements to ensure performance, it means that the molds have to be accurate. And making ski boot molds ain't cheap. In fact, the molds are the most expensive part about the process.