I think there's different levels of "on demand". In this case, I think this is much slower level of "on demand". I see two primary use cases of cloud: 1) You'

I think there's different levels of "on demand". In this case, I think this is much slower level of "on demand". I see two primary use cases of cloud: 1) You're a startup or just need something small, and want to focus on building your MVP, instead of messing around with colocated Linux servers. Cloud is much more expensive than those, but you don't care because you don't really need all that much, or maybe you are VC backed and have unlimited money. 2) You're a large company with broken internal processes. You can get server in company datacenter in three months after seven approvals (since it's capex), or you can spin up an EC2 instance. You don't care about cost since you have unlimited money. Those are kind of medium scale "on demand" - not "I need 100 new servers right this minute" but "I need server in ten minutes intead of 'when I get to buy one' or 'in three months and 37 forms'". In both cases, you're throwing money away, because time is more important for you than the extra money cloud costs.