[This article originally appeared in our sister publication, Wireless Watch, which is focused on the wireless industry.] Small cells took a major part in last week’s Mobile World Congress Americas event in San Francisco, indicating how this technology is finally entering the mainstream of carrier strategies as they look towards densification and 5G. Ironically, of course, the MNOs’ hesitancy to implement small cells at scale may come back to haunt them, if new rivals emerge which can use shared spectrum, small cells and edge computing to support new business models and undermine the mobile operators’ dominance – with the IoT being particularly disruptive. But whether the deployer is an MNO, a cableco or a neutral host provider, the complexities of…