Introducing ISO 22301 to Top Management

You should present you project in business terms and try emphasize the benefits, like:
- Compliance
- Marketing Advantage
- Reduce Dependence on Individuals
- Prevent large-scale damage

ROI (Return on Investment) with your own examples

You can also use ROSI (Return on Security Investiment Calculator) in https://advisera.com/27001academy/free-tools/free-return-security-investment-calculator/

Avoid using some words
- Instead of Backup, use Prevention
- Instead of Cost use Investment
- Instead of Probability use Risk
- Instead of Incident use Damage
- Instead of Disaster use Loss/Downtime

Hope it helps