Instead of using a restrictive license you also have other options to protect your SaaS business: - Excel in execution and price your offer to be a no-brainer

Instead of using a restrictive license you also have other options to protect your SaaS business: - Excel in execution and price your offer to be a no-brainer when compared to running/mantaining a self-hosted version. - Premium add-ons not available as OSS (without crippling the free version) - Sell a self-hosted "enterprise" version that includes premium features/add-ons. - For those that want/need to run their own OSS instance you can always offer consulting/trainning/support services.