Four years ago, Chris Anderson posted a list of delayed Kickstarter campaigns. I was intrigued by this list and came back to it a few times over the years. 2014 and 2015 was the peak of the drone hype.
Unsurprisingly, most crowdfunding campaigns were late. Surprisingly, however, most (10 out of 17) crowdfunding matured in companies that are still around almost 5 years later. Crowdfunding is not the only way to start a business, but it looks like it was quite beneficial for those companies at that time. Alternatively, we could say that Chris Anderson is quite good at selecting crowdfunding campaigns!
Here is the updated spreadsheet. Let me know in the comments if I made a mistake.
How about the Krossblade SkyProwler? Launched end of 2016, first deliveries only around end of 2017. Some backers are obviously still waiting...
Nice overview and indeed quite some companies who are still around. Also check "Quadshot" on kickstarter, now "transition robotics" and ComQuest Ventures Vertex, to name some.