Do what Jira does - your license is good for support and releases out to one year (or whatever) from renewal, but the core software and the entire ecosystem bui

Do what Jira does - your license is good for support and releases out to one year (or whatever) from renewal, but the core software and the entire ecosystem built around it is constantly moving. Nothing stops working if you don't renew your licensing, but the world moves on without you. Why should your customers subscribe if the current one-time fee gets them everything they need? that's just poor business. But if it brings value, and the cost is reasonable, they'll happily keep renewing.