We called it! Recently, our own Dave Trumbore hypothesized that a ViacomCBS streaming service, taking advantage of their recent corporate merger, could destroy other streaming services in its wake. Now, it looks like Mr. Trumbore's musings are coming to fruition. According to CNBC, ViacomCBS are indeed developing a new streaming service that would combine everything currently available on the CBS All Access app alongside Viacom's robust library -- including Paramount films and Viacom channels. This would be... a lot of content. Viacom's assets include profitable, popular things like Paramount Pictures, much of Miramax Films, Nickelodeon, BET, MTV, and …