Correct me if I’m wrong but isn’t this how suse, red hat, databricks etc work? They offer useful open source tools and make money to sustain development by offe

Correct me if I’m wrong but isn’t this how suse, red hat, databricks etc work? They offer useful open source tools and make money to sustain development by offering service around those tools. I could be totally wrong but that is my understanding of some of these projects.