> It's easy to spend upward of $10000 on really robust automation, when the same manual process would cost only $3000 over its usable lifetime.
Manual process is incomparable to automation, because $3k human will make mistakes as humans are not good robots. Also, your miserable $3k human can now do normal thing.
> The thing about really robust automation is that for it to pay off, the process have to be static over a large number of executions.
It doesn't have to be static, it just mustn't be random. Also, how often process changes is important and automation with scripts (that can be changed ad hoc) allows for quick flexibility when problems arise.
> As for thinking that it's a dichotomy between "no automation" and "absolutely robust automation"... well, I think you're robbing yourself of a large chunk of the strategy space by refusing to see any middle ground but the two extremes.
You are also robbing yourself of time to do other things which may lead to more progress, since you are fixing flaky automation all the time.
> A human can chain such scripts together in the requisite sequence by spending very few minutes of their day.
I LOLed. A minute for a single script. You must have missed that in enterprise there are hundreds of scripts. Heck, I usually have 20-30 on a single project.