For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

The reason is because the companies that back these assets, and some others, have a 1:1 between their tokens and the USD (I'm unfamiliar if EURS, THKD, and stables of other fiat offer 1:1).A possible scenario would be that you offer the seller to pay in a stable coin, like mentioned above.

Over that we send a default and start the court process if they don't pay. 

Today is very different as it is all about the management (and not appreciation) compared to past where management could suck but you still had superior apprecation.This will not crash housing of course but all those "creative" deals where people are paying more than market value are going to realize they have no exit. 

Rich people pay cash for homes.

I use Melio to pay contractors.  

We have AI that can answer specific questions why not a easy integration to remit and pay taxes directly? 

Had a quick question.I purchased the property for $500K about 10 years agoI'm selling the property for $575K with the Fire DamageI received an insurance check of $380K for the fire damage.After Paying off the Mortgage + Escrow + Realtor Fee's, I'll be left with about $150K.My question is will I get taxed on this $150K?

Pay cash.  

Let's say they pay you $2000/ month * 12 = $24,000/year.