The artificial intelligence boom is a multitrillion-dollar investment opportunity, without question. But it isn't the only one. A massive opportunity in the real estate sector could be hiding in plain sight.Consider this. After a surge in mortgage refinancing in the 2020-2021 timeframe, interest rates soared, and refinancing volume dried up. With the majority of U.S. homeowners having mortgage rates under 5%, it no longer made financial sense to refinance at 7% or higher in order to tap into home equity. Th ...