Yes & no,... 5E kinda drops the ball hard on explaining ravenloft to the point of giving an impression where Barovia=Ravenloft rather than just one of many domains within ravenloft & really dowbplays the idea of ravenloft itself being actively hands on horrible maybe sentient world that might be capable of seeing beyond the 4th wall. That almost extends to the point that it gives the appearance of not ever being considered as a distinct thing. Wealth can
help obtain things in ravenloft, but often it takes something more special like obtaining it somehow making things unpleasant for an individual that The Dark Powers feel deserve special torment. That's so true that the
researcher background feature is practically the very definition of what sort of hubris that might cause The Dark Powers to single someone out for torment.
While there are domains within ravenloft that are almost certain to have more comprehensive resources, crossing into another domain deliberately by choice & expecting to get where you hoped is a bit of a stretch most of the time. Even if Ravenloft
allows you to cross domains as you hoped it's entirely possible that it might do so purely to torment you