Earlier quoted context omitted.
This is what it was originally intended to be, but Kickstarter long turned into a marketing platform for companies to get pre-orders for their new products.
Ah, that makes sense. But it still seems mostly benign to me: it accelerates the transition from non-obvious demand to purchasable product, thus doing better on the "I wish this product existed" metric. I can see how it's effectively leeching off the efforts of those entrepreneurs who are trying to get pre-orders, but, as long as they haven't started building the product, it's a relatively small amount of work lost,…
Many kickstarters are made by people with no experience in actually delivering product and are almost certainly doomed to fail from the start. Another large group are established companies that have investment already, and are using it purely as marketing because it is impossible to build their product at the funding levels kickstarters reach (outside of the big ones like Pebble). There are very few kickstarters that have non-obvious markets and are run by someone I would be willing to risk money on to have made, and zero where the return is worth my risk.