I am wondering if this US Law is specific to Cable Companies, does it also apply to those using Fibre and good old DSL?

And in the EU, does that mean you could theoretically buy your own ONT + Router if you have an Fibre Internet Connection?

I hate having so many boxes, so I have always preferred to have Modem / ONT + Router in One, but it seems to be an unpopular option around the world. As a matter of fact I would even want my TV to be the Wireless Router so I could no boxes underneath my TV.