It do go down
Published August 31, 2015
Views 74.8M | Likes 1.87M | Comments 51.4K
Based on an estimated $0.7–$2 CPM, this video's 74.8M views translate to an estimated $52.4K – $149K in lifetime ad revenue.
Revenue estimate
Based on an estimated $0.7–$2CPM (revenue per 1,000 views) — a rough public estimate, not actual creator earnings, which depend on ad rates, audience geography, and monetization settings YouTube doesn't expose publicly.
Total (all-time)$52.4K – $149K