This Ars Technica article is unintentionally funny if you have been following the 5G hype. Verizon is installing 5G systems in thirteen NFL football stadiums, but the distance limitations of 5G means in these Verizon installations, you won't have 5G service in some parts of the stadium.
Verizon can always add more access points, but then the cost goes up. 5G is going to be expensive and it is going to be a long time before it is as widely available as the current cellular network.