this is bad but in the grand scheme of things, why we have "slack" anyway developer community that make the most OSS project rely heavily on close source syst

this is bad but in the grand scheme of things, why we have "slack" anyway developer community that make the most OSS project rely heavily on close source system as a "de facto" industry standard is weird one it not like slack has a secret sauce either, but having most critical infrastructure as a main source of communication while the very same community that proud to be release OSS product is a bit strange