SBA Communications’ (NASDAQ: SBAC) extensive and geographically diverse wireless communication infrastructure portfolio is well-positioned to gain from the wireless carriers’ high capital spending for network expansion amid growth in mobile data usage and accelerated 5G network deployment efforts. The long-term leases with its tenants assure stable revenues. Also, portfolio expansion moves, domestically and internationally, to capitalize on the secular trends of the industry are encouraging. However, customer concentration and consolidation in the wireless industry are key near-term concerns. …