I wonder how much of these movements are them iterating and hunting for ROI in their infrastructure costs. Did GCP and AWS salespeople sell them on the benefits of the cloud, offer discounts, white glove migration help, showed some calculation on how much $$ they will save in the cloud, etc that on paper sounded great, but wasn’t ultimately a good fit?
Their market is probably saturated and perhaps declining that they are reaching for optimizations elsewhere.
There is no such thing as "saving money in cloud".
It is all about convenience and it always costs more than a smart team could achieve elsewhere.
I tend to hear an argument that it is cheaper since you do not have to pay people to maintain those services, but in reality you still need that person to set up and maintain your particular cloud setup. And the services themselves are much much more expensive than maintaining your own servers in a data center.
In my opinion cloud hosting and services are more meant for large corporations where no one wants to take responsibility and is scared of doing anything. Cloud is a nice way to shift the blame if/when things go bad - "but cloud is industry standard, everyone does it".
Hacker news crowd is drinking their own cool aid on this topic and not recognizing how much costs can be avoided if they just drop EKS from their stack.
Remember that in SRE all the abstractions are leaky and thus having more abstractions means having more complexity not less.
Their market is probably saturated and perhaps declining that they are reaching for optimizations elsewhere.