Share your insights or perspective on the financial matter presented in the input.

Why do banks finance shared construction as mortgages instead of financing it directly and selling the apartments in a building?
You seem to underestimate the risk of this deal for the inverstors. A person purchasing a residence is happy to pay $70K instead of $150K now, and the only risk they take is that the construction company fails to build the condo. Whatever happens on the estate market in two years, they still saved the price difference between the price of complete apartments and to-be-build apartments (which by the way may be less than $150K-$70K, since that $150K is the price on a hot market in two years). However, an investor aiming to earn money counts on that the property will actually cost $150K in two years, so he's additionally taking the risk that the estate market may drop. Should that happen, their return on investment will be considerably lower, and it's entirely possible they will make a loss instead of a profit. At this point, this becomes yet another high risk investment option, like financing a startup.