Is it possible for a potential investor (without funds but with a good idea and a great proposal for investors), to pitch a Bitcoin investment idea to a group of friends and family and companies, with projections of good profit but with their invested funds, to gain backings?
Yes you can do that, People are after what will give them profits with no effort from their end. If you can guarantee them to make a profit without being responsible from their ends for losses then you can win their hearts and get the funding that you'll need from them to invest in Bitcoin but because you can do this shouldn't make you to do it as you don't know how the market will always turn out.
Bitcoin having a direction doesn't mean it can't go off script as some people might put it. Some unfortunate circumstances can happen like a war or economic recession that affects the market and Bitcoin doesn't do well in those times. Never borrow money to invest and don't take money from others to invest in the market. The market is no respecter of anybody and it can make a professional rethink his qualifications because of the results that he's realising. You don't put you hopes on the market going in accordance to your plans. Be prepared for anything because alot of disappointment are in investment and the crypto market has no exception