That's what I thought with RDR, and for all intents and purposes maybe that is exactly true. What is RDR online like? What kinds of microtransactions are there? Is RDR:O big with the 12-17 age crowd, and going to last them a decade as well?
But yes, if they're thinking long term like that, they definitely would have had that in mind during pre-planning. I figured if we had non-numeric titular titles, they would've appeared much sooner and been a part of a same console generation.
It's time for GTA VI, so it's also likely modern day as a result. Still could be Vice City though.