I remember 5GbE being in some enterprise devices for some time, but it was quickly replaced by 10GbE. I don't remember exactly how many years ago that was. Either way, look how long 10GbE has been on the market, and prices are not getting much lower. I have a Netgear XS505M switch, and its price is barely lower than it was seven years ago. Lucky me, I got it on sale.
Recently, there have been many new mixed switches that aren't cheap but are already affordable and offer as much as most users need at home or in a small office. I mean something like 2x 10GbE + 5+ 2.5GbE or 2x 10GbE+ 5+ 1GbE.
I guess one of the reasons manufacturers want 2.5GbE as a new standard is that the bandwidth is +/- the same as the max of typical home WiFi. In short, so there are no bottlenecks in your local network. It doesn't look so great in reality, but as you said, building a 2.5Gbps environment is already quite cheap.
So we keep posts at least in some way on topic, in my environment, Gigabyte X870E Pro ICE could make up to ~2.45Gbps on the cable and up to ~1Gbps WiFi when the connection between 2 computers in the same network was around ~2.4Gbps on the cable and ~500Mbps on the WiFi. This is why I said that, in reality, it doesn't look so great, even though, in theory, both connections should not be far apart. This is what marketing never tells