Answer:
1. It is not easy to get funds for a start up, as many banks do not consider it as a successful decision to provide loan to a start up, as the feasibility of recovery of loan cannot be identified and guaranteed.
2. Venture capitalists also faces the same issue as of bank, also they are large equity investors and tend to invest in even larger project.
3. Private investors do not blindly invest and rather are more cautious then banks or venture capitalists, as because they do not huge funds to invest, and with less amount of investment they need even higher assurance.
4. Public stock is never available for a start up as for public stock issue you need great credibility, and good previous record.