[gnopgnip]

If they were twice as efficient, you would only need to run half as many and spend less.

[asa400]

This makes no sense. If they were better and cost less I would use them for even more work. I'd run more tests, more kinds of tests, more builds, etc. This is classic Jevons paradox territory.

[gnopgnip]

Most businesses would not double their use if the cost dropped by half. There are other bottlenecks, not price elastic