I would most certainly categorize what is commonly known as the "upper middle class" as wealthy. Upper-middle usually has a sizable wealth, mainly in real estate, equities, etc.
So it is not only the rich and ultra-rich (but of course them benefit from this the most if they don't do anything too stupid).
Of course all of these terms and definitions are quite fuzzy so the whole argument hinges on some implicit agreement as to the specifics.