Nope, many (probably the majority on a dollar weighted basis) assets are bought with the intention of holding them forever. The cashflows from said assets are t

Nope, many (probably the majority on a dollar weighted basis) assets are bought with the intention of holding them forever. The cashflows from said assets are the return. Rent from houses, dividends and buyback from stocks, coupon payments from bonds. And many reasonable people do their analysis of said assets assuming they'll hold forever, even if they know they will likely sell at some point.