Open source is here to stay and means more than free software. Red Hat, Canonical, Suse and others like Linux Foundation are major stake holders when it comes to open source development with Red Hat leading the pack. Enterprise IT, Severs, Mobile phones makers and every sphere in IT all have open source apps or need for them to run on their platform. From Androids to Linux, Servers and more, Open source software is applied to carve out cost, improve productivity and solve vendor lock-in issues which proprietary software offers.

Free for most of it
No vendor Lock-in
Community Support
Cheaper when paid for
Stable and easy to access
Better Updates and Support
Cross platform

https://gtbensmagazine.com/2019/04/02/reasons-to-use-open-source-software-for-deployments/