The passive infrastructure sharing deal between UK operators Vodafone and Telefónica O2 was a ground-breaking one, but last year it seemed it might fall apart because of the greater capacity and density demands of 5G. Vodafone had indicated that shared sites might not be enough to support its requirements in urban areas. But the operators have now announced an expanded relationship to prepare for 5G, though this may involve selling off some of the towers included in their joint venture, CTIL. However, the partners expect to expand CTIL’s role to cover more aspects of passive infrastructure management; and to increase its ability to generate revenues from leasing tower space to third parties. The parent firms have been considering the potential…