For what it's worth - I'm not sure what the criteria is (I assume we're "medium sized / not a big upsell opportunity"?) - our GCP rep quickly pushed us to switching to using a GCP reseller. They took over our billing so that we can pay via ACH, and provide both free first-line support/escalation and paid engagements for bigger projects; they don't charge a premium on top, apparently Google pays them for supporting us. Hasn't made much of a difference in how we operate, but at least we have a direct-ish line for issues when they come up.