The legit use case for companies like Google/Amazon etc is only to sell it to customers. None of these companies use K8s internally for real critical workloads.
Yes he can(and probably should) buy a yacht. What you're missing though is that
by not being transparent they miss out on a lot more contributors. So it's not
a super smart move.
Also keep in mind that a lot of contributors might not use OpenBSD, yet they might
be interested in offering some small amount if they believe it's for a good cause
and they know where that money is going.