Marketplaces sell finished goods. You go to a stall or a shop and you see neatly wrapped boxes of goods to peruse. These goods are ready to pick up and take home–just pay the price and be on your way. Seems like a great life.
These goods are, of course, the result of hundreds of thousands of man-hours of scheming, focus group tests, production, bikeshedding, and all the things that companies do to produce goods hoping you will purchase them. You are not looking at, judging, or paying in any way for all of the drafts that could have been along the way. You see whats been tested, polished, shipped, scalped back in all the ways to keep as profitable as possible.