IMHO few leagues will have a smaller impact because of covid-19:
- German Bundesliga. They always have high standard to admit teams in their top league. They only 2 teams (Suhl and Potsdam) really struggling are the same who were struggling even before the pandemic.
- Russian Superliga. Most of the clubs have huge sources of money from the local governments, and some of them have additional money from Lokomotiv (railways) and Dinamo (national police department) or big sponsors like Gazprom.
- Korean V-League. Teams belong to companies.
- Japan V.League Division 1. Teams belong to companies, except Okayama Seagulls (that doesn't sing foreigners).
- Chinese Volleyball Super League. Teams have the local government behind and some of them big sponsors.
I'm not sure about Polish league. They may suffer, since they rely a lot on sponsors, but many of them have also help from their local governments.