I have to wonder, in the US at least (I don't know if this trend is outside the US) most ISP's are selling devices that are both the modem and the router. Which

I have to wonder, in the US at least (I don't know if this trend is outside the US) most ISP's are selling devices that are both the modem and the router. Which I despise since it also means the ISP can change settings on my Router way too easily. Then customer support will often tell you how they can't support you using your own router (I use my own, I refuse to use theirs and it is currently in bridge mode). How are the Linksys, d-links, and others actually doing? I would have thought that that market to completely plummet. Which would lead to shortcuts and a lack of proper care.