In my thinking they should not.

Closed source is just such an inferior development model. Not that bad practices and stupid mistake would not happen in open source. It has happened and will certainly happen again.

But more eyes are always better. And people who value deep technical understanding over just making money are often found in an open source ecosystem. It is incredibly frustrating to have to work with black boxes like Windows where you have inferior choices to explore and fix things.

Obviously there are many decision makers who don't see this. So shops like Kaseya do unfortunately survive.