Leaving aside the unfortunate matter of potential deforestation which I do find generally painful, your take is pretty much the same as mine when it comes to the wine markets.
A few years ago, I was asked to do an unusual cellar appraisal. It was a cellar of all high end California wine (a few old world wines- but virtually all CA) that was being sold as part of the sale of a very expensive home.
I completed the appraisal with all the necessary support, but what astonished me was how many wines there were I had never heard of- all tiny boutique CA wines- that are only just recently starting to have any kind of secondary auction or resale data. Most of them were quite valuable- we are talking SQN prices- very rare, got very high scores from a predictable slate of critics (not necessarily Parker) and were also wines I have never seen in my life.
When you consider the relative price increases of things like Dunn, Corison and Diamond Creek- to name just a few- as compared to some of the traditional and solid insider favorites in Bordeaux or Burgundy, I think Napa at this point has a great many relative values at the top end. And I think a lot of that must be driven by the evolution of this new micro-market catering specifically to collectors (and to be fair- also some who like those kinds of wines.)
I have not spent time over the years in Napa- but what is being described sounds a lot like what has happened to Austin, TX since I was a student there (and part of what prompted me to move to Dallas a few years ago.) At the end of the day, the change comes to some places. It is not about the uber-rich, they merely have the money to be major players in it. But sometimes a place that is paradise to many long time residents becomes paradise to a lot of other people too.
If you ever lived in Austin prior to 1995 and were to drive through downtown, or down South Lamar or South Congress right now, you would be sick to your stomach at all the change.
However, it is important to note that Austin specifically rezoned these high traffic areas for higher population density because they would be easier routes for the eventual construction of better mass transit- PLUS it preserved the neighborhoods by taking pressure off advocacy for rezoning so that one homestead could be turned into 3-4 townhouses.
Drive down South Lamar or South Congress, turn off the road and go 2-3 blocks, and you will be in familiar territory again. There will be some new bigger houses, and every house is a lot more expensive- but the general character of Austin is still preserved. Most of the stores and hobby businesses I know and love from my college and early professional days in Austin are still there- they just mostly moved or happened to be in areas that have not been redeveloped to hell.
I do not know how that balance is being achieved in Napa, but my point is that big change is a reality when an area becomes a hot commodity. But even so, much of the good still remains- even if you have to go looking for it.