Laser to create Star on Earth?

I was talking more about how engineers currently have to balance cost and benefit, in regards to processing. Right now, the idea is to find the optimal point where you've got sufficient benefit for whatever your costs are. However, if you've got unlimited energy, a lot of your cost basically goes away, so you can either make the same product for cheaper, or a better product for the same price.

It's the same in principal as how computer part prices work. If you've got something that is about 50% as good as "the best", it would cost you relatively little for a pretty significant upgrade. However, if you've got something that is, say, 95% as good as "the best", any upgrades you could get would not only be incredibly expensive, but would likely be unnoticeably different.