i dont know where your peeps are buying their home equipment??
i buy nothing but the best from craigslist. I have a HP1810, the consumer 8port version j9802a. It is maybe 15years old. I bought it because I used it in a previous life way back when rock was dirt. It is rated 10/100/1000Mb.
The 10/100Mb speed is highly avaliable since the 90's or something.
Say your streaming a video; after going throough a firewall, local lan routing, wiofi, stripping off all the netFlix wrapings yes your lucky to get 500K Bytes / S
the fastest device we have in our house is a 2017 MBP. Recall that was the Apple with the junk butterfly keyboard and the stage lights screen. If you dont use the keybard and the restart gods are in-line to setup avoiding the stage lights you can stream a mean netFlix movie. None of our devices use a lot of bandwith. Now if we aspire to buy a new 8K flat screen driven by a PC motherboard with full HDMI 2.1 ports. Now that might use have some medium bandwidh reqiremewnts. Till than...