Don't think this as financial move, think it as marketing move. He buys Bitcoin for $1.5B to get publicity for the fact that he will accept bitcoin. Bitcoin h

Don't think this as financial move, think it as marketing move. He buys Bitcoin for $1.5B to get publicity for the fact that he will accept bitcoin. Bitcoin has low liquidity. Selling large amounts affects the markets. $1.5B supports BTC valuation in the case that BTC speculators want to buy 50,000 Teslas.