Why is there no alternative to Paperstac?

[Jeff Costa]

Brett Burky's contributions to Paperstac and the educational content he produces are are unquestionably valuable. That said, it's surprising to see a lack of diverse competition in this space. In the real estate SFH market, we observed multiple platforms like Zillow, Redfin, Realtor, Trulia, and Movoto - each offering unique user interfaces, features, and experiences.

So why doesn't the note investing market have similar variety? Where are the competitors offering different UI experiences, third-party API integrations, mobile apps, and other innovations? It's puzzling that this market appears to support only a single dominant player. 

Any thoughts?