I'm not sure why you are being downvoted, because this is 100% the case. EMH posits that all risk-adjusted returns move toward the market Sharpe ratio. You can

I'm not sure why you are being downvoted, because this is 100% the case. EMH posits that all risk-adjusted returns move toward the market Sharpe ratio. You can then modify the returns/vol by buying or selling at the risk-free rate. So when renting to a poor person, you are going to demand the market Sharpe ratio by making them pay more in order to keep your risk adjusted returns in line the efficient frontier point.