They cost me nothing except for a spot on a shelf to keep them.

Even better would be an infinite return where you don't invest any of your own money.I hope that kind of answers your questions, I'm very much a newbie myself but anyway I can help I'm always happy to.

Theoretically there can be an infinite number of parties involved, but it's difficult enough putting together a deal with 2 parties.

I need 36" high wall cabinets due to very limited storage space in the kitchen, but Lowe's didn't seem to have these in their off-the-shelf line.

Then they could add a shelf inside to sit your pizza on and you can slide it out.

But if there’s one thing that’s true about real estate, it’s that there are virtually infinite ways to get started and be successful.So what is your success story?

It's simply easier for an investor and their hired professionals to keep track of one infinitely scaleable entity as opposed to many entities (possibly from many different states with different requirements for compliance, etc.) 

I had no money in the deal, thus I had the least risk (minus your reputation), and any profit is an 'infinite' return.

but your credit score is going to be important.Some title company's will provide off the shelf deeds of trust and note.   

You need the infinite return to also be a significant amount of money or a heck of a lot of smaller infinite returns to become a billionaire.