Because They are Rubbish (Score 1)

Unfortunately after 15 years as a network engineer for ISP's and telcos, that's pretty much it when it comes to small routers.

Turnout of new models per vendor is on average 6-10 a year. In many of these cases, they run different OS's. Needless to say, at that rate I'm quite surprised that they work at all.

I could keep on the rant detailing nonsense of several small router vendors, but I'll skip for now :-).

Marko.