You know there are online courses you can take in business studies that will help you a lot. It can't be fair to go through life so ignorant of how the world works.
When a project like the Apple Watch comes along a for profit company has to consider EVERY cost associated with that project, from R&D, to designing and building the display cases, everything. Someone even calculated how many square feet of the store would be repurposed for this project, because in retail you have to consider the revenue per square foot, to maximize the efficiency of the retail space that you have.
A company like Apple has to figure out every last dime that was spent making Apple Watch happen. Figure out how much they will be able to manufacture each device for, and how much profit they will need to make to make the whole project worthwhile.
You can't just say that large chunks of the cost of this project are 'the cost of doing business.' The world is not like that at all. If Apple spent $100m bringing this to market, and another $10m in staff training and rearranging the stores. They can't just say, oh well that $10m is the cost of doing business.
As a company you have to make back what you spent, and make a profit. That's kind of the point of a company. If businesses operated as you suggest, they would go bankrupt.
Apple is not a benevolent charity with a desire to issue every man, woman and child with an Apple Watch for free.
They are a company who invested heavily to make a product, marketed the product, trained their staff to sell the product, figured out how to make it on budget on a huge scale to a specific quality. Now they need to recoup all of that investment, and walk away having made a profit overall on the sale of Apple Watches.
This is business 101. It's how business works. I'm not sure why you are so confused.