> Things scale differently in different markets and products.
This is vague.
Running on the cloud is always more expensive than running your own infrastructure past a certain size and always provides less predictable performance.
That doesn't seem obviously true. If you operate a service and I operate a service and their loads are out of phase the cloud provider can serve us both with one set of hardware, halving the price. If I own my hardware, and I'm not a cloud computing provider, I pay the full cost 24x7.
This is vague.
Running on the cloud is always more expensive than running your own infrastructure past a certain size and always provides less predictable performance.