I have some visibility into this space through the lens of "high-end" boardgaming (big boxes, frequently lots of minis, very high production value, and usually high time commitment to learn and play).
Crowdfunding's first use case was speculative investment in projects that might not ever succeed. I think this space has a big inherent trust deficit and Kickstarter can never solve it because Kickstarter will always have strong local incentives to not kick sketchy founders off of the platform, but Kickstarter is absorbing some of the loss of trust there because it's their platform.
There is another use case for crowdfunding - coordinating preorders of products that need enough orders to be worth a production run, but that are otherwise low-risk. This model works pretty well but Kickstarter also has competition from Backerkit in the space. I think Backerkit is also more focused on the safer use case of preorder coordination and less on the "speculative product" case.