 They got an extra $2,700 a month to invest. Instead of $225,000 down, $2,700 a month, they're investing it and making almost $6 million. Oh yeah, a passive US index is making 10% a year returns for over 100 years. This $5.8 million is liquid. This home will never be $5.8 million and definitely not liquid. This is why people who choose to rent become millionaires. And why Warren Buffett says that he would have made more money if he was renting.