Frankly, at the age of 70, I suspect that Jimmy has done an inventory of his life and realized that statistics would suggest that he will not be here in 10 years. That has to be a daunting thought, and it would tend to force one to make responsible decisions about how one is going to live his remaining years. I believe that Page would go "all in" for a Zeppelin reunion, but anything short of that would probably not hold much interest. The other thing is that I am sure he still holds out hope for a future Zeppelin project. If he gets buried in a new solo album and tour, any form of Zeppelin project will never materialize. Like Black Sabbath, if these guys are going to do anything as a group again, the time must be soon, and Page knows that.
He loves his social life, and record collecting, and I suspect that he is at a point where he is simply doing what he wants, and carefully planning how he invests his time in his declining years. Stats alone would suggest that his days are relatively few, and I doubt the thought of a solo album and tour are a priority for him. He is dabbling, and working on his legacy, while truly enjoying his semi retirement.... something we will all aspire to when we are 70.