Not at all. Hashicorp literally pays for all development of nomad. They're the only commits short of a small number of PRs. Kubernetes commits are from a wide array of companies, and Google is only one.
And just as with Kubernetes and Google, Nomad development can continue outside of Hashicorp if Hashicorp no longer decides to support it. Which org has a longer track record of deprecating almost everything they release? Not Hashicorp, and frankly, I’ll always trust Hashicorp versus Google based on the historical behavior and forward incentives of both.
It's not quite the same. Hashicorp controls whether PRs get merged. Google does not control whether PRs get merged into kubernetes. There's a long list of companies that do, including IBM, redhat, Huawei, etc. Sure, you can fork it, but now you have a separate repo that requires people to know about it.