My ambition and drive is infinite, always has been and always will be.

I realize you can get infinite ROI with BRRRR, but I don't think that's what the big players do.

The benefit is in the ability to use the same pot of cash over and over again to scale up your portfolio quicker with Infinite CCR!

This makes ROI investment infinite and almost meaningless.

Even when a unit is old and dying and it would make infinitely more sense to replace. 

I looked at the place and believe that I can sublet it for $700, creating a  $40 cash flow with no money down (so technically infinite returns).

If you find a great deal on a 4plex where you live in one unit and the other units provide you with total coverage and extra cash flow per month; then you CoC return is essentially infinite (assuming you got your closing costs covered by the seller).

This gives infinite more flexibility.

I have an investor that has shown interest and we have initially discussed terms where they receive a 15% preferred return and then we split anything above that (I know this may not be the best terms on my end but I'm interested in the process and it could be a relationship builder, plus infinite return if I put nothing in).

There are an infinite amount of ways to set it up, but I have heard of a lot of people doing a 50/50 split when one person provides all the money and the other person does all the work.