"Do nothing" has long been an option in engineering analyses.  Sometimes, even though it is difficult, it is best to convince clients or top tier managers that it is the best of numerous options considered.
A while back, when working for an electric utility client who wanted to develop a commercial park on a major north-south interstate highway (okay, yes, I-95), I naturally included the "do nothing" option.  At first they were not amused that the  hopes of their dream project were being dashed, but as the facts were laid out they saw the wisdom of at least waiting.
That was the end of my consulting fees, but it was the right decision.  A few thousand in fees saved them probably several hundred thousands in wasted resources.