Fixed-mobile substitution accelerating - legacy copper voice revenue declining 15-20% annually as customers shift to mobile-only or VoIP, creating structural revenue headwind of NZ$80-100M/year
Regulatory intervention risk - New Zealand Commerce Commission reviews mobile termination rates and wholesale pricing every 3-5 years; adverse rulings could compress margins by 100-200bps
Technology disruption from satellite broadband - Starlink's NZ rollout threatens rural broadband monopoly, particularly in areas where Spark's fiber economics are weakest
Intensifying mobile price competition - 2degrees and One NZ (formerly Vodafone) aggressively discounting unlimited data plans, pressuring Spark's mobile ARPU which has declined 2-4% annually
Enterprise cloud competition from hyperscalers - AWS, Azure, and Google Cloud directly competing for large enterprise workloads, commoditizing Spark's managed services and compressing IT margins
Fiber market share erosion - alternative fiber providers and Chorus wholesale competitors gaining share in new housing developments
Elevated leverage constrains flexibility - Net Debt/EBITDA estimated at 2.0-2.3x limits M&A capacity and creates refinancing risk if RBNZ rates remain elevated through 2027-2028
Dividend coverage pressure - with FCF of NZ$200M and dividends consuming 80-90%, limited buffer for earnings misses or capex overruns; any dividend cut would trigger 15-20% stock decline
Pension obligations - defined benefit schemes create NZ$150-200M unfunded liability sensitive to discount rate assumptions
StructuralCompetitiveBalance Sheet