It does. But if your endpoint is so inactive that it sits idle most of the time, having it on a server/ec2 instance means you are paying 24/7 for it to sit ther

It does. But if your endpoint is so inactive that it sits idle most of the time, having it on a server/ec2 instance means you are paying 24/7 for it to sit there not doing anything. You could argue that it's not that much different to pay to keep the lambda warm vs paying for a server to be idle half the time.