The whole practice is kind of a proof-of-work scheme for credibility and liability laundering: even if you intend the team/company to follow your conclusions regardless of what anyone else thinks or says, getting some analysts or outside consultants to burn non-trivial amount of time and money evaluating the situation before rubber-stamping your proposal, is what may be necessary for you to sell your ideas to the rest of the team/company. Such exercise may be especially important if you want to protect yourself from having your head served on the platter after your hare-brained idea fails spectacularly.