Traditionally, that's exactly how it turned out in the early ps360 days when demos were the new thing. Nothing has prevented those demos from continuing to appear as a normal part of the release plan on PS4/X1 other than the results. But, we do still get high profile demos like RE4 and this one, obviously at times it works.
This could be a case that it works in, plus all the rumors and worry over the performance of the title don't seem to be substantiated by anyone credible anyway. LOL
I honestly don't see how the game can't sell quite a few units with Sony moving their bundles over to this one anyway. They have a lot of demand for the console and people will buy it along with whatever game they stick in there. My complete and total disinterest in the title likely colors my judgement on it as well, but I have no interest in Elden Ring either so hardly a sales indicator.