solarwinds
Most development was done in Russia (disregard tales sold to the West about them supposedly being a Czech company, they were Czech mostly in the name, real work happened elsewhere). Exited Russia in the beginning of 2022, leaving many talented people behind: not everyone wanted or could leave because of families, obligations, personal beliefs.
Remembering where most of JB's money was coming from, can't really say they had a choice.
To this day Kazakhstan pays out monthly monetary compensations to people whose health was negatively affected by the nuclear tests on the Semipalatinsk nuclear polygon. Several people I know personally receive these compensations.
https://egov.kz/cms/en/news/nuclear_tests
https://egov.kz/cms/en/services/family_support/pass035_mtszn