Putting together a team of competent engineers, developers, etc and having them create something meaningful is hard enough as it is. Trying to copy someone else’s tech doesn’t lower the bar all that much.
There are myriad of other examples, or different scenarios where an NDA or non-compete failed, and another company just puts out a product faster and cheaper. Happens with software, hardware, and of course business processes.
[0] https://www.hongkiat.com/blog/amusing-knockoffs-popular-tech...
[1] https://www.buzzfeed.com/alannaokun/30-knockoff-products-tha...
[2] https://www.liveabout.com/hilarious-knock-off-brands-4767601
I don’t see any out there that indicates they beat the original idea to the market by way of breached NDA or non-compete.