As someone who recently built an open source crm (iceburg.ca - Laravel / Vue) I think your choice of license is very limiting. Limiting how the crm can be used will limit the number of users and handicap yourself. Focus on a great crm first and don't worry about others copying you and providing a saas solution better than yours. The more people using your crm is more important than preventing others from making money.

I debated whether to use your license because other crms like SuiteCRM are. I quickly discovered getting others interested enough to host their own saas platforms using my crm framework means more user interest in your crm. The hardest part is getting users to try your crm. That's what you want, not to try to capture imagined lost profit on saas hosting. Then with scale you can create a marketplace of addons and widgets that can capture the real profit center