It takes years, years upon years, or hard work, smart work, dedication, vision, fortitude, buckets and bukets of sweat, tears, and doing the tough work one dosn't "want" to do all just to build a company to "ok", to a place where it can really start and take off.

I have no clue on the percentages, however, most people don't have what it takes to landlord properly, nor do many have the fortitude to deal with stress. 

If you do figure out an arbitrage strategy, you will make some temporary profits but eventually the computers will detect your wins and start front-running your trades.It helps to have an advanced degree in Math/Physics/Statistics, access to sophisticated simulation software to back-test your trading strategies, and the intestinal fortitude of a Navy Seal :)

I highly recommend this path if you have the social fortitude to live in areas that the rentals make the most sence, and you do not mind moving regularly.  

As we walk the house with the officer I am dumbfounded by a number of party-goers that have the testicular fortitude to come back and demand to re-enter the property to search for a lost cell phone charger, or a box to a tequila bottle.

Furthermore, vetting the right managers/syndicators is an art in it of itself and requires patience, fortitude and education. 

I have limited knowledge on it but I possess a strong work ethic, sales experience and supreme intestinal fortitude. 

Upward & Onward with an unstoppable ambition, determination, fortitude AND a mind & body that is DESTINED FOR GREATNESS (while remaining humble & never haughty)!!!!!!!!

Sir, if you are too afraid to get this information,  then you do not have the intestinal fortitude to be a landlord.

Very lucky, but it also took some intestinal fortitude.