I'm not saying Verizon is blameless here, but it's a matter of 'would you rather be right, or happy?' I personally will take 'happy' more often than not. You're absolutely right, Verizon shouldn't find a 48h downtime window acceptable. However, their customers who defined their business requirements to include a separate-vendor DR platform sure are (comparatively) happy right now.
Does Verizon not work in IT for a living? Why does their architecture not allow them to switch over to a backup despite having many days of warning?