I tell it the people everyday, get some sales. In my business at www.tummax.com I get everyday this kind of calls:
me: How much are you looking for?
client: 3 million
me: do have sales?
client: No, I first need money for my company
me: company? what is your company?
client: we sell software
me: do you have users?
client: no, I first need money to set up a sales team and spend on marketing
me: did you made 1 call to a possible client?
client; No! I told you so, we need money first
me: sorry, I can not help you with raising the capital, but I can get you the first client
client: no, we have to set up everything first
me: so you have not a company, you have a hobby at the moment?!
client: It started as a hobby
me: It’s still a hobby! Sorry, we only help companies!
Get the best proof of concept: SALES!