[kelnos]

It's not a matter of time in the wild, it's a matter of adoption and cost priorities. Until the past several years, most SoHo routers were super constrained wrt CPU, memory, and ROM, so adding support for a new transport layer protocol would involve an unacceptable cost increase in what has rapidly turned into a race-to-the-bottom commodity industry.

So you end up with a chicken-and-egg problem: router manufacturers aren't going to add support for it unless there's sufficient demand, and there can't be sufficient demand because very few people can use and rely on it.