Time - Is it the deciding factor in marketing?

On the face of it, the answer is 'YES'; it is the deciding factor. To substantiate the claim we can sight numerous examples from various industries, e.g.

1) Instant noodles - Easy to cook and Ready to eat
2) Ready made curries - Heat it and Eat it
3) Pain killers - Relief from pain within Minutes (or whatever the duration is)
4) Car servicing - Reliable, Same Day service with free Pick-up and drop off
5) Customer Service - Guarenteed within 30 seconds attendance of call
6) S/W Implementation - Quality, with reduced Cost and Cycle-time
7) Courier Service - Guarenteed same day delivery
.... and the list goes on.

You must have noticed, the above points have some words in bold. That is done to highlight one thing, be it product or service, the time as a differentiator makes sense when combined with the main satisfying need / requirement.

In some cases it was convenience, in some it was quality, and yet in others it was the reliability, and so forth. The time was a differentiator, because it was able to satisfy the underlying main need / requirement.

On it's own it can't survive; however, mix it with a underlying need, and you have a potent weapon in your armour. Therefore, first address the underlying need and then stress upon time factor. Can segment have any influence on time, think about it?