Exactly! I purchased a 4G router[1] with an external antenna to ensure a sufficiently good connection for four people on a small Croatian island. After three months, I am positive that most people would be perfectly fine (or even better off) with just a 4G antenna on their roof. Our speeds were around 50-120/10-20Mbps with a 60-100ms latency to Zoom's closest server, depending on the weather.
One problem - there is only so much bandwidth available in a certain portion of radio spectrum. If everyone started doing what you are doing then “most people” would be seeing pretty bad performance.
Wired is always better; especially in higher density environments. If you are in a rural or low density area then this is obviously less of an issue - but everyone moving to wireless would be an utter disaster where most people live.
1. Teltonika RUTX11: https://teltonika-networks.com/product/rutx11/