Threads is an internally developed Twitter clone when Twitter launched in 2006 and Threads launched in 2023? I'm not saying they didn't build it, but it was not an original product design; they waited until there was already a market, launched and deployed it to Facebook users. I will give you the Ray-Ban glasses, but even that was a product that is a better version of Google Glass, so still not really a unique product.
Sure, it's not original or unique, but that wasn't your question. Facebook itself wasn't particularly unique when it launched.