[lenerdenator]

Part of the bet is probably that since Terraform is almost necessarily going to run on a cloud service that is already being paid for, the user might not care that a bit gets added to the bill.

Redis? I'm not sure. Like you say, they don't want Big Tech to slap a UI on it and profit. And, really, once they start competing on price (which they might sooner rather than later to keep people from going back to on-prem) you can guess they might use something that's free so they don't have to pay the license on a per-server instance.