Technology

Average ping isn't really the problem with wireless, it's packet loss. But my concern wasn't WiFi, which has gotten pretty good, though still prone to issues with certain home designs and building materials. My concern was cellular networks. 5G reception at my house with two different major carriers (AT&T and T-Mobile) is just OK at best, and I measure plenty of packet loss and lag spikes. It's not a problem for my phone, but I would find that unacceptable for my home internet.

I don't think we will ever reach a point where wireless technologies are as good as a hard connections. All the neat tricks we use to eek more bandwidth out of wireless spectrum like time division multiple access are equally applicable to both copper and fiber optic lines. And those copper and fiber optic lines have the benefits of having much more spectrum available to use, not having to share spectrum with nearly as many devices, and not having usable spectrum limited by line-of-sight. They also benefit from not needing to share nearly as many clients over the same medium, since each individual wire is it's own medium, rather than sharing the same RF medium as every other wireless device in your locale.