I've managed several accounts with GCP over the years and I've always maintained a great relationship with our contacts there. Some of these accounts were quite small, on the order of <$20k/mo, and even then we were kept abreast of anything that might be cause for concern. I always maintain a standing biweekly meeting with at least someone on the other side (account exec, technical staff, whatever) and I've yet to be blindsided by anything.

Is Google's communication good? No, not particularly. The only way something like TFA happens is if the relationship is neglected (by one or both parties). I'm not saying Railway did something wrong, but there are usually many flags and opportunities to correct long before drastic actions.

I get the impression that Railway plays fast and loose with a lot of their limits and resources and that Google may not be a fan of that.

Edit: would also like to say that if you put all your resources in one GCP project you are going to have a bad time. If you organize stuff over many projects it is very unlikely that they will ever take account wide action. I've had issues with, for example, a particular tenant's behavior, but it never jeopardized the other tenants.