It is Oligopoly at best.      2, Apple's questionable business practices.

How is that good business practice?

, but it's practical. --- I'm not trying to be negative on any of the options btw, just realistic.

Any tips, experiences, or best practices you can share would be greatly appreciated!

Additionally, successful investors typically build a solid network and due diligence practices to minimize potential losses.Reinvestment: Using financing means you can reinvest the profits from one project into multiple new ones, potentially accelerating your growth.

So in practice, it might not mean a lot. 

As you get further away from standard real estate practice, the risk is increased by a “legal” risk that your protection may be interpreted quite differently than you expect by a court and that the subtleties of the protection a mortgage or trust deed document provide with established law and court decisions handed down for (in the U.S.) 250+ years is not existent. 

Are you working for a firm in southern California or do you have your own practice?  

Ensure all your screening practices comply with Fair Housing Laws and other legal guidelines to avoid potential legal issues.Improving your tenant verification process can help you find more reliable tenants and protect your investment.

My take is that predatory practices and threats must be controlled, and housing quality must be enforced.