Why BTC will reach $500k in the future. 1. Fixed supply of 21 million with the 2024 halving still reducing new issuance. Scarcity tightens further into 2026–2028. 2. Spot ETFs already hold tens of billions and keep absorbing coins on strong inflow days (recent single-day prints above $600M, led by BlackRock). Sustained institutional buying removes supply from the market. 3. Bitcoin is only about 5–6% of gold’s market cap. Even a partial rotation of gold or broader store-of-value capital into BTC supports a multi-fold re-rating. $500k would put it at roughly 15–20% of current gold size. 4. Corporate treasuries, nation-state interest, and clearer regulatory paths continue to expand the buyer base beyond pure retail. Each new cohort adds structural demand against the hard cap. 5. Historical cycle multiples have compressed but still produced large absolute gains. From current levels near $83k, a move to $500k is a roughly 6x, consistent with late-cycle expansion under continued ETF and macro support.