I can't quite parse what you're saying about the reward to risk level being too low for lock in, but having worked with a number of startups that were 100% aws

I can't quite parse what you're saying about the reward to risk level being too low for lock in, but having worked with a number of startups that were 100% aws and paying dearly for it thge lock in was their major problem - ec2 ancillary private branded or unique services all seem to be designed with lock in being the number one goal. From what I've seen the first acknowledgment of lock in seems to open the flood gate, kind of a well if we're already "stuck" we might as well use this proprietary feature that will save us 10% in build time. Not the smartest approach, but no one accuses most web startups of being in the long game.