I mostly try not to be too Google-focused here, but I have to say...
I'm pretty proud of GKE, and I think it offers a lot of value other than just being cheap. Managing clusters is not always easy. GKE handles all of that for you - including integrations, qualifications, upgrades, and patching clusters transparently BEFORE public security disclosures happen.
We have a large team of people who deal with making GKE the industry-leading Kubernetes experience that it is. They are on-call and active in every stage of the GKE product lifecycle, adding value that you maybe can't see every day, but I promise you is there. When things go sideways, there isn't a better team on the planet to field the tickets.
I don't understand the anger here - you're literally saying you'd rather pay more for a service of lower quality because... why? Because they will continue to charge you more? Does not compute.
For those people who use a large numbers of small clusters, I understand this may make you reconsider how you operate. As a Kubernetes maintainer, I WANT to say that a smaller number of larger clusters is generally a better answer. I know it's not always true, but I want to help make it true. GKE goes beyond pure k8s here, too. Things like NodePools and sandboxes give you even more robust control
GKE is the best managed Kubernetes you can get. And we're always making it better. Those clusters actually DO have overhead for Google, and as we make GKE better, that overhead tends to go up. As someone NOT involved in this decision, it seems reasonable to me that things which are genuinely valuable have a price.
Also, keep in mind that a single (zonal) cluster is free, which covers a notable fraction of people using GKE.