Sorry, but I can not get your logic.
First of all there is a huge difference between building a project on top of a certain open source technology, and locking in to a proprietary third-party service provider. This kind of analogy simply doesn’t work.
Secondly, your revenue argument is not applicable to this discussion. Fedora is not built for revenue, it is built for open-source innovation. And this innovation is not limited to the Silverblue effort.
While the infrastructure resources we use are less hyped maybe, and don’t always look as shiny, but we do things which no one have done before. And being the driver for adoption of open-source tooling on the infrastructure level is as important as taking over the developer workstation.
And we are not reinventing things here, we are creating new.
I would rather see some understanding from community members and maybe thoughts and ideas how we can improve the situation.
For example Pagure developers can prioritize the issues for their roadmap, and generic Fedora audience including Silverblue SIG can help with promoting, writing those tutorials, onboarding newcomers and building a healthy community around Pagure.
Or at least Gitlab if it comes to this.
The other point is that generally we should start actively searching for contributors to Fedora Infra. We have many interesting tasks there, for both juniors and seniors alike. With technologies like Ansible and Kubernetes and with that scale we have, we do a lot of unique and quite fancy infra stuff, which we don’t usually brag about. And we should probably start doing it 
So please remember that we are the big platform, and big community united by common values. And if slight annoyance in your personal workflow can help others to build a better thing and avoid a proprietary lock in, may be it is worth it.