The neutral host model gained ground during 2021, largely because it is being seen as a good fit for a number of 5G deployment situations, urban and rural, indoors and outside. The emergence of Open RAN has also assisted by encouraging shared virtualized infrastructures that allow greater flexibility and freedom of choice, while avoiding contention over selection of equipment vendors when multiple MNOs or enterprises are involved. They are not a panacea though and it is important to distinguish between situations where they are desirable or feasible, and those where they are not. It is certainly true that their stock has risen with 5G, because the higher frequencies call for greater density, which increases the economic and logistical appeal of…