Yes, coax based connections can be quite fast but in practice the chipsets supporting DOCSIS are quite bad or the (usually closed source) firmware is very buggy

Yes, coax based connections can be quite fast but in practice the chipsets supporting DOCSIS are quite bad or the (usually closed source) firmware is very buggy or probably both. I should know: https://www.phoronix.com/scan.php?page=news_item&px=Technicolor-Opens-TC72 https://www.phoronix.com/scan.php?page=news_item&px=Technico... e.g. just bridging is often prohibited or configured in such a way that slows down some traffic and you can't do anything about it. E.g. Compal modems were limiting any traffic with protocol 41 to ~ 20 Mbps (up and down) on some networks even in bridge mode. (https://www.root.cz/clanky/pomale-ipv6-tunely-s-modemem-compal-od-upc-vodafone/ https://www.root.cz/clanky/pomale-ipv6-tunely-s-modemem-comp..., Google translate works kind of ok for that) And DOCSIS chipsets seem to not be cheap actually, probably because there is a quasi-monopoly on the chipsets unlike for optics. Also coax networks tend to be configured for great asymmetry (often 20:1), which of course isn't the fault of DOCSIS but it is almost always the case on any internet service over coax (cable TV connections). As a consumer or business, I want the best service possible and that usually means having FTTH/ FTTB for all these reasons. The best way to ensure proper cabling in the last mile would be to have pipes for cables straight into each home. That way, you could change most data-carrying cables without digging or without digging much. This seems to be the approach with fibre in some countries.