Comment by voytec
5G for just internet is somewhat doable, but unlikely reasonable. There is a volunteer-driven LoRaWAN Helium[0] mesh network which added 5G some 2 years back. But it's cryptocurrency-driven and apparently unprofitable for volunteers investing in radios and antennas. At least where I live.
My neighbor still has the Helium antenna and radio on his balcony but it's offline due to costs/profits disproportion. It's the LoRaWAN, pre-5G hardware though, and I don't know anyone running the 5G version, if it's even a real thing. I liked the idea from technical perspective but the project itself was off-putting for me due to being built around a crypto token and having overall web3 smell.