As the whitepapers says, there definitely has been a huge delay in the boosting of Blockchain start-up companies. This is to the point where that delay may be the result of the resources needing to be pooled to launch a company from the idea stage up to the fundraising stage. This is all noted down carefully in presale.ventures' whitepaper. It is important to pay careful attention to these pertinent details because this is how the company will essentially be run.
You are right, that is an important detail. I think you would usually see tech or other types of ICOs merely have technical white papers on the actual blockchain architecture. However, here we see that the interesting aspect is more of a tokenomics or economic whitepaper that has a different investment philosophy behind it.