And the price for convenience is, eventually, hassle migrating to a different service every time something doesn't work to your liking. Need to pay Slack for features? Jump another hoop. What for?
Microsoft has made billions locking people up in the name of convenience.
You can have these things if you care or you can use its simplest form. Don't want to use a bouncer? Use a web client.
People keep repeating OSS. But now OSS is more about having being recognized than really believing in it. Using closed source software is one point.
I'm no radical, I use a Mac and I shed a tear every time I have to use Lightroom because I haven't find the drive to move to Darktable or Sublime instead of Atom.