Focussing on funders for a new business idea encourages a culture of dependence. An innovation cycle that contains venture capital or other funders makes it seem like a safe option, that the funder needs to be made happy, and by making the venture capitalist or business angel happy that you are doing the right thing. A validation, if you like, as though you are getting a gold star from your teacher for good handwriting.
But a business idea does not work in your head, it does not work in a presentation to potential funders… a business idea works in the execution of the business idea. In the doing of it. The question is not “will someone fund it?” it is “Can I do it? Can I adjust my idea so that someone will buy it? Would I fund it myself?”