On the c# side though Jetbrains has possibly suffered a little bit. I know a lot of people have ditched ReSharper because it's just too slow in VS2019 and the built in stuff is often 'good enough' for them. Others either deal with the pain or have switched to Rider (I'm in this latter camp and happy about it).

On the other hand Jetbrains is a lot more diversified now than before (when their main products were IntelliJ, ReSharper, and teamcity)