Sorry about that but Oracle, IBM, Microsoft, and other gigantic corpo are already the biggest contributors to the kernel, key projects like wayland and gcc are maintained almost entirely by red hat (now IBM) so we are already in this situation. Although thanks to amazing maintainers we still have these beautiful community distros: Mint, Arch, and Debian Linux, if you don´t need any fancy support these ones already give you all you need.
Don’t get me wrong I hate what Red Hat did, but Suse is offering an alternative for everyone that was using RHEL without official support and so what? If you need a big company support, accept with happiness what Suse had to offer. If you don´t Debian, was and will be always there for your servers.

Because for me it misses the point entirely, but answering your question directly: if you need some kind of “enterprise level” support you just have to “trust” some company, you have no choice, for full paying customers red hat is still ok and SUSE will fulfill the remaining needs. But if you don´t need extensive third-party support and don´t wanna be held hostage by the goodwill of some bullshit corpo you should be using Debian for a long time.