I haven't heard of many of these but the ones I have were state actors covering up things the state itself did or enabled. that's a different category from private executives getting punished when they embarrass Beijing.

i looked it up and at least the evergrande ceo seems to have bern fined to the point where he had to declare bankruptcy (as of a few months ago, my information is old), so i guess he did find some justice (i think hes not very bright and was likely lied to by his underlings -- many such cases, so it is nice that the buck stopped there but the root cause was not fixed afaict)