>First, he's had a real anti-corruption push that seems to be meaningful and seems to apply to senior government officials and the wealthy (eg Jack Ma).

Anti-corruption pushes in the government are 100% purges, just under a different name. As for Jack Ma, wasn't he targeted because he said something that the censors really didn't like all while pushing some finance app? My memory is hazy as to why it happened, but it certainly wasn't because he was wealthy.