That’s a fair observation — however I don’t think the question is really if the heirs will sell off to non Asians. Meaning - I don’t think the question is really about race.
I think the question is really about class.
In the 80s/90s, immigrants from Taiwan/HK were for the most part well-educated (unlike the earlier immigrants who settled in Chinatown) and these folks for the most part settled in places like Cupertino and Millbrae.
Then, in the 00s/10s, many of the immigrants from China were/are also well educated, and, as we have seen, millennials are opting to live in city centers as opposed to suburbs.
As a country now, we have had 4+ decades where those of Chinese ethnic-extraction who come to this country are not always associated with the economically disadvantaged anymore. (unlike, say, the 1880s-1940s)
So Chinatown will change and grow — and I suspect really the question is — will Chinatown continue to be for the underclass, or will Chinatown increasingly cater to the better educated — whether those better educated folks are Asian or non-Asian being mostly moot?
I sense that China Live and Mr. Jiu’s restaurants point to a bet for the upper class…