- Angel investing in tech startups has been positive in the US, achieving a 6% success rate, but it remains uncertain if it can prove worthwhile in Greece. - Successful angel investments rely on outstanding entrepreneurial talent, good management skills, and realistic plans, but startup teams in Greece often come unprepared and have unrealistic expectations. - For angel investing to succeed in Greece, startups need more grounding, angels need to add more value and become stricter, and there needs to be more options for further funding rounds led by more active later-stage investors.