This is certainly a good business/investment opportunity. If your algorithms are any good you'll make a lot of money, and you'll help your customers make money.
My problem with Lofty is that it is bad for society.
Fundamentally, this is gentrification-as-a-service. You're driving additional demand to neighborhoods at inflection points, and if it works well it's definitely going to accelerate displacement. It is true that Blackrock et al already do this and likely have similar in-house algorithms, but this will widen the market and make things worse. I'm not completely against gentrification, especially when there's development that increases market supply- and when done right that can actually decrease displacement. (an example you're probably familiar with is the USC Village. Despite the criticism it gets, it removed thousands of student renters from the South Central LA market which likely resulted in downward pressure on prices) But housing speculation like this drives up prices and only hurts poor and minority communities.
To Jerry and Max: did you consider the ethical implications when deciding to start this? I completely see the angle that you're democratizing access to an investment asset that currently mainly benefits wealthy institutional investors. I imagine, though, that a lot of people are going to see your team of young almost-all-white males and paint you as everything that's wrong with tech, and you should consider to what degree that assumption represents the truth.