Please don't believe that this strategy is "reliable" in any way to get paid, if you or your company need that money for survival. FOSS and especially (A)GPL is just about forcing the balance to put more power in end user's hands, nothing else. A Proprietary+AGPL license combo might get you some cash from business wanting to change the code, but it will still allow any Amazon out there to host your code for free as part of their service catalog, while you are left to go out of business.