This is a good theory.In order to have unhindered success, they'll have to coordinate with Sony that sufficient units will be available for sale. Sony is going to put out their earnings report for the fiscal year in a couple of months, that will also come with a forecast of the upcoming fiscal year. That forecast will tell us what Sony is thinking behind the scenes based on discussions they've had with T2.
I said recently, someone made a good point that platform holders could have a better idea about when GTA VI will launch. Pay attention to anything Sony or MS does that could be related.