Do you think it's fair to compare a startup with established multinational companies that have profits and a serious track record? These investors are presumabl

Do you think it's fair to compare a startup with established multinational companies that have profits and a serious track record? These investors are presumably investing in something, not writing a blank cheque. I could go start a space mining company tomorrow, with a view towards building a space shuttle that was powered by a single drop of oil but I would assume that I would have some trouble raising capital without some kind of verification of my claims.