Hi Gareth
I'm not sure I understand fully what you're asking here. Tell me is this it?
Sitting down to do the maths, you find you've invested more (time, money) in your current venture than you'd realised. This is a bit worrisome (I assume because the results are indifferent), and you're wondering if others are finding the same thing.
And, as a way to overcome this problem you're thinking of looking for backing by selling part of your business to one or several backers. Is this something others have considered?
Sarah