Act as a consumer psychologist with 10+ years of experience in digital marketing and behavioral economics. Write a 1,200-word blog post titled '[The Psychology Behind Subscription Conversions: Why Customers Commit]' for a [SaaS company] targeting [small business owners]. The post should explore key psychological triggers—such as loss aversion, the endowment effect, and social proof—that drive subscription sign-ups. Include 3-5 real-world examples (e.g., Netflix, Spotify) and actionable tips for optimizing landing pages, CTAs, and trial offers. Use a conversational tone with subheadings, bullet points, and one [interactive quiz] to engage readers. Cite at least 4 academic studies or industry reports to back your claims.