Seeing you mentioning "apps" makes me think I have not explained it well...

I'm not talking specifically about performance here, more about ease of use and not having to learn to interact with a machine via UIs, keyboards, mouses and weird things like these.

They just care about getting the result they want without having to learn our cute UIs.

If they could ask the machine to "machine do this now!" and it would be done (quickly, of course) they would be really happy (and pay you well for it).